At 72 inches wide by 84 inches long, the California king is the longest of the six standard mattress sizes, but it’s not the largest. That award goes to the standard king, which offers more surface area at 76×80 inches. California kings are best for couples who want space while they sleep, and those who share their bed with children or pets. It’s also worth noting that due to material costs, California kings are typically the most expensive option for any given model, and that they usually share a price point with their standard king peers.

At a Glance
  • A sturdy mattress with a lifetime warranty, the WinkBed is our choice for the best California king mattress. It has targeted cushioning of pressure points and top-notch edge support.
  • A single sleeper may enjoy the roominess of a Cal king, but our guide focuses primarily on criteria that matter most to couples (durability, edge support, motion isolation, & cooling).
  • Need the Cliff’s Notes version? Watch 1-minute video reviews of our top picks.

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Best Overall

WinkBed

8.9 /10

Test Lab Score

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Offered in four firmness options, the WinkBed stands out from the crowd for its strong all-round performance. This hybrid mattress features strong edges so you and your partner can make the most of your California king mattress. It also sleeps cool, facilitates movement, and helps maintain spinal alignment with targeted lumbar support.

Credit: Sleep Foundation Test Lab

Price

$1,499

Mattress Type

Innerspring

Firmness Options

Medium Soft (4), Medium Firm (6), Firm (7), Firm (8)

Trial Period

120 nights (30 night requirement)

At a Glance
  • Who It’s Best for: Side, back, and stomach sleepers across different weight groups.
  • Feel: Available in four designs ranging from a plush and adaptive medium soft (4) to ultra-supportive firm (7) and “Plus” (8) models.
  • What It’s Made of: The WinkBed Plus contains a comfort layer of zoned latex, while the other three are constructed with adaptive polyfoam. All feature support cores with pocketed coils and a reinforced perimeter.
  • What We Don’t Like: Strong initial off-gassing odor can linger for up to 72 hours after unboxing.
Scoring & Reviews

The following ratings show how suitable this mattress is for different sleeping positions and sleeper weights. These scores are determined by how well the mattress supports and relieves pressure for each sleeper type.

Side Sleepers

Under 130 lbs

8/10

130-230 lbs

9.5/10

Above 230 lbs

8/10

Back Sleepers

Under 130 lbs

7.5/10

130-230 lbs

9/10

Above 230 lbs

7.5/10

Stomach Sleepers

Under 130 lbs

6/10

130-230 lbs

7.5/10

Above 230 lbs

6/10

We performed a meta-analysis on 8573 validated customer reviews of the Winkbed. This is what people who bought the mattress had to say:

  • Pain Relief and Support: A significant number of users report alleviation of back, hip, and shoulder pain, attributing this to the mattress’s supportive design. Individuals with chronic back issues have noted substantial improvements in sleep quality.
  • Comfort Across Sleep Positions: Reviewers from various sleep positions—side, back, and stomach—find the mattress comfortable. The availability of different firmness levels allows users to select options that best suit their sleeping style.
  • Temperature Regulation: Many customers appreciate the mattress’s ability to stay cool, enhancing overall comfort throughout the night.
  • Edge Support: Users frequently mention the robust edge support, which provides a stable and usable sleeping surface across the entire mattress.
  • Firmness Options: Customers appreciate the variety of firmness options available, finding the right balance for their personal preferences.
  • Durability and Craftsmanship: The mattress is often praised for its high-quality construction and materials, with users expressing confidence in its longevity. The lifetime warranty further reinforces trust in the product’s durability.
  • Customer Service and Trial Experience: Customers value the 120-night risk-free trial and responsive customer service, noting that these factors contribute to a positive purchasing experience.

Full Details

The WinkBed is a versatile hybrid mattress available in four firmness levels. The balanced construction and multiple firmness options make the mattress a great choice for a wide variety of sleepers – especially those seeking a combination of surface-level cushioning and strong overall support.

How It Performed

Edge support is one of the WinkBed’s key strengths due to the zoned coils. Temperature control is another highlight, thanks to the breathable Tencel cover and strong airflow throughout the coil support core. These features make the WinkBed a suitable option for couples.

During our tests, the medium firm WinkBed was one of the most versatile models. The mattress earned rave reviews from back and stomach sleepers weighing up to 230 pounds, as well as side sleepers weighing 130 to 230 pounds. Many testers attributed the mattress’ exceptional comfort to its mid-level firmness and ultra-supportive feel. The medium soft model was best suited for side and back sleepers up to 130 pounds, while the firmer models were most beneficial for back and stomach sleepers over 130 pounds.

Construction Breakdown

The four firmness levels of the WinkBed are medium soft (4), medium firm (6), firm (7), and “Plus” (8). The mattress features a Euro-top padded with adaptive foam, which is infused with cooling gel intended to disperse body heat. High-density polyfoam beneath the top layer provides additional contouring and support. The base layer contains pocketed coils arranged in a zoned layout, ensuring extra reinforcement for the midsection and minimal sinkage along the perimeter. The entire mattress is encased in a Tencel cover.

Most WinkBed models share the same basic design, but they vary slightly to produce different firmness levels. Most notably, the medium soft model has an extra polyfoam layer to confer softness. The firmest model, known as the WinkBed Plus, is composed of polyfoam and latex layers on top and a zoned coil base on the bottom.

Trial, Shipping, and Warranty

WinkBed mattresses ship free to the contiguous U.S. Customers may purchase White Glove delivery and old mattress removal as well. The mattress comes with a 120-night sleep trial and lifetime warranty.

Most Comfortable

Helix Midnight Luxe

9.7 /10

Test Lab Score

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The Helix Midnight Luxe is the upgraded version of the Helix Midnight. Specifically engineered for side sleepers, the Luxe model features a thicker quilted pillow-top for more cushioning, as well as zoned lumbar support to prevent lower back pain. The result is a highly comfortable mattress that works well for a California king bed.

Credit: Sleep Foundation Test Lab

Price

$1,899

Mattress Type

Hybrid

Firmness Options

Medium Firm (6)

Trial Period

100 nights (30-night requirement)

At a Glance
  • Who It’s Best for: Side and back sleepers weighing up to 230 pounds.
  • Feel: The mattress has a true medium firm (6) feel with a cushy, adaptive surface and targeted pushback around your torso and hips.
  • What It’s Made of: Two memory foam comfort layers over dense transitional foam and multi-zone pocketed coils with a reinforced perimeter.
  • What We Don’t Like: Back and stomach sleepers over 230 pounds will likely need a firmer bed.
Scoring & Reviews

The following ratings show how suitable this mattress is for different sleeping positions and sleeper weights. These scores are determined by how well the mattress supports and relieves pressure for each sleeper type.

Side Sleepers

Under 130 lbs

8.5/10

130-230 lbs

10/10

Above 230 lbs

8.5/10

Back Sleepers

Under 130 lbs

8/10

130-230 lbs

9.5/10

Above 230 lbs

8/10

Stomach Sleepers

Under 130 lbs

6.5/10

130-230 lbs

8/10

Above 230 lbs

6.5/10

We performed a meta-analysis on 5876 validated customer reviews of the Helix Midnight Luxe. This is what people who bought the mattress had to say:

  • Comfort and Support: Many reviewers express that the mattress provides exceptional comfort and support, especially noting its ability to alleviate back, hip, and shoulder pain.
  • Sleep Quality Improvement: The mattress is frequently described as transformative for those who previously struggled with sleep disturbances.
  • Temperature Regulation: Positive remarks are made about the cooling properties of the mattress. Users find the cooling aspect effective, helping to maintain a comfortable sleeping temperature throughout the night.
  • Customer Service: Experiences with customer service are predominantly positive, with buyers appreciating the responsive and helpful nature of the support team. Issues are resolved satisfactorily, contributing to a positive overall customer experience.
  • Durability Concerns: A few reviewers express concerns about the mattress showing signs of wear or sagging prematurely. These concerns are not widespread but are significant enough to be noted by potential buyers.
  • Mixed Reviews on Firmness: While many find the mattress perfectly balanced, there are mixed reviews regarding its firmness. Some users find it softer than expected given its firmness level. While the ‘medium firm’ rating is appropriate by our measurements, the bed does have a ‘cushy’ foam feel that makes for a fairly soft surface feel.

Full Details

The Helix Midnight Luxe is a hybrid mattress with a responsive feel and a well-cushioned foam surface. This design benefits side sleepers who need a bed that supports the body but also cradles areas with pressure buildup.

How It Performed

The Helix Midnight Luxe has a medium firm (6) feel that should be comfortable for a broad swath of sleepers. With ample contouring from the memory foam, this model is excellent for side sleepers between 130 and 230 pounds and back sleepers under 130 pounds. The foam cushions the shoulders, hips, and spine while the coil system amps up responsiveness. A zoned design in the coils offers extra support for the lumbar region. The responsive surface also makes it easy to change positions.

Construction Breakdown

The comfort system in the Helix Midnight Luxe is made of three foam layers. The top two layers are made of memory foam, and these are followed by dense transitional foam. The support core contains pocketed coils that are zoned for extra support beneath your midsection and reinforced around the perimeter. For the cover, you can choose between Tencel or a GlacioTex Cooling material, the latter of which is engineered to dissipate body heat on contact.

Trial, Shipping, and Warranty

After delivery, customers have 100 nights to try out the Helix Midnight Luxe with the option to return it for a full refund. A lifetime warranty protects against mattress defects.

Best Value

Silk & Snow Mattress

7.7 /10

Test Lab Score

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The Silk & Snow is a memory foam mattress that excels at isolating motion transfer, perfect for couples sharing a California king bed. This is one of the few all-foam mattresses on our list, and it’s an excellent option if you’re on a limited budget and you like the classic “hug” feeling of memory foam.

Credit: Sleep Foundation Test Lab

Price

$650

Mattress Type

Foam

Firmness Options

Medium (5), Firm (7)

Trial Period

365 nights

At a Glance
  • Who It’s Best for: Side sleepers up to 230 pounds for the softer model, back sleepers up to 230 pounds for the firmer model.
  • Feel: Available in two designs, a plush and adaptive medium (5) feel and a supportive firm (7) option.
  • What It’s Made of: A comfort layer of gel-infused memory foam, followed by transitional and base layers of dense polyfoam.
  • What We Don’t Like: Stomach sleepers who weigh 130 pounds or more may not receive enough support from either design.
Scoring & Reviews

The following ratings show how suitable this mattress is for different sleeping positions and sleeper weights. These scores are determined by how well the mattress supports and relieves pressure for each sleeper type.

Side Sleepers

Under 130 lbs

8/10

130-230 lbs

8.5/10

Above 230 lbs

6.5/10

Back Sleepers

Under 130 lbs

6.5/10

130-230 lbs

7/10

Above 230 lbs

5/10

Stomach Sleepers

Under 130 lbs

5.5/10

130-230 lbs

6/10

Above 230 lbs

4/10

We performed a meta-analysis on 1769 validated customer reviews of the Silk & Snow Mattress. This is what people who bought the mattress had to say:

  • Comfort: Many users praise the even contouring of the S&S Mattress, with some preferring the deep plushness of the medium model and others enjoying the added support of the firm design.
  • Motion Isolation: Motion isolation appears to be a defining strength of the Silk & Snow Mattress. Users report little to no motion transfer when their sleep transfer gets in and out of bed or changes positions during the night.
  • Edge Support: Edge support is somewhat lacking for both designs, but fewer complaints come from owners of the firm Silk & Snow Mattress.
  • Ease of Setup: Users like the “mattress in a box” design and say it’s fairly easy to set up.
  • Customer Service: By and large, customers have had positive experiences with Silk & Snow’s customer service team.

Full Details

The Silk & Snow Mattress is an all-foam bed that offers excellent contouring for sleepers who experience painful pressure buildup. The bed carries an attractive price-point given the quality of its materials, especially compared to other beds in similar price ranges.

How It Performed

During performance tests, we found that the Silk & Snow’s foam layers excelled at relieving pressure buildup in areas like the shoulders, hips, and spine, which exert more pressure on the bed surface during sleep. The foam also absorbed a lot of motion, so our testers barely felt each other’s movements when sharing the bed. This is an asset for couples, especially if you wake easily when your sleep partner moves at night. The bed earned the highest marks from side sleepers who weighed up to 230 pounds, as well as back and stomach sleepers up to 130 pounds.

Construction Breakdown

The mattress features three layers of foam. It begins with a top layer of memory foam infused with a cooling gel. This foam has a higher density composition than some competing memory foam beds, which generates stronger support. The next layer is made of polyfoam that balances cushioning with support, while the bottom layer is dense and supportive to create a sturdy base for the bed. The removable and machine washable cover is made of a polyester and spandex fabric blend.

Two firmness levels are available. Opt for medium (5) if you prefer a close contour and deep cushioning from your mattress, or firm (7) if you want more support from your mattress.

Trial, Shipping, and Warranty

Silk & Snow offers free shipping to the contiguous U.S. You can try out the bed for 365 nights and return it within this timeframe for a full refund. The mattress is also backed by a 15-year warranty.

Best Luxury

Saatva Classic

9.4 /10

Test Lab Score

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Saatva has elevated the concept of a traditional innerspring with its flagship mattress, which boasts reinforced lumbar support, a dual-coil design, and a plush Euro-top. Offered in three firmness options, two height profiles, and California king or split California king sizes, it’s sure to meet the needs of most couples.

Credit: Sleep Foundation Test Lab

Price

$1,795

Mattress Type

Innerspring

Firmness Options

Soft (3), Medium Firm (6), Firm (8)

Trial Period

365 Nights ($99 Return Fee)

At a Glance
  • Who It’s Best for: Side, back, and stomach sleepers who appreciate extra support and bounce.
  • Feel: Available in a plush (3) soft, balanced medium firm (6), and ultra-robust firm (8) design.
  • What It’s Made of: Comfort layers of polyfoam and dense memory foam encased in a Euro-top, followed by transitional minicoils and thick innerspring coils.
  • What We Don’t Like: Dual-coil design can generate a lot of motion transfer and disrupt sleep for couples.
Scoring & Reviews

The following ratings show how suitable this mattress is for different sleeping positions and sleeper weights. These scores are determined by how well the mattress supports and relieves pressure for each sleeper type.

Side Sleepers

Under 130 lbs

7/10

130-230 lbs

9/10

Above 230 lbs

9/10

Back Sleepers

Under 130 lbs

7/10

130-230 lbs

9/10

Above 230 lbs

9/10

Stomach Sleepers

Under 130 lbs

6.5/10

130-230 lbs

8.5/10

Above 230 lbs

8.5/10

We performed a meta-analysis on 3308 validated customer reviews of the Saatva Classic. This is what people who bought the mattress had to say:

  • Delivery Service: Positive feedback on the delivery process is common, with customers highlighting the professionalism and efficiency of the delivery teams. The white glove delivery service, including old mattress removal, is frequently praised.
  • Comfort and Firmness: Customers appreciate the customizable firmness options, with Plush Soft, Luxury Firm, and Firm levels catering to diverse preferences.
  • Durability: Long-term users report that the mattress maintains its comfort and support over the years, indicating good durability and quality construction.
  • Material Quality: Customers appreciate the safe and high-quality materials used in the mattress, such as the absence of harmful chemicals and the use of organic cotton.
  • Temperature Regulation: Some reviewers specifically mention sleeping cooler on the Saatva Classic, highlighting its temperature regulation features that contribute to a more comfortable sleep.
  • Adjustability and Customization: The ability to customize the mattress for personal needs, like the split king option with different firmness levels, is a significant plus for many customers.

Full Details

The Saatva Classic is a luxury innerspring model featuring a dual-coil design and multiple customization options. Customers have the option to pick between two mattress heights, with no difference in feel.

How It Performed

During our tests, we found the dual coil system provided excellent relief for sleepers who are susceptible to uncomfortable pressure buildup. Side sleepers, in particular, gave the mattress high marks since this position tends to put pressure on the shoulders and hips. The mattress may also appeal to people who run hot during sleep. The top layer of coils is situated close to the surface, so this layer goes a long way toward promoting airflow and helping maintain a cool sleep surface.

Construction Breakdown

You can choose between three firmness levels: soft (3), medium firm (6), and firm (8). All three models have a Euro-top followed by two thin layers of polyfoam and memory foam, which provide some cushion as well as lumbar support. A transitional layer of individually pocketed minicoils provides extra support while creating minimal motion transfer. Below, the hourglass coil support core has a foam encasement reinforcing the perimeter, helping provide support right up to the edge of the bed. The entire mattress is wrapped in a tufted organic cotton cover with a natural thistle fire retardant.

Trial, Shipping, and Warranty

Saatva offers a 365-night sleep trial and a lifetime warranty. Orders in the contiguous U.S. include free White Glove delivery and old mattress removal.

Best for Side Sleepers

Nolah Evolution 15

9.2 /10

Test Lab Score

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Side sleepers enjoy seemingly bottomless pressure relief with the Nolah Evolution 15, whose zoned foams and coils form a deep cradle to accommodate the hips and shoulders. The mattress is sold in three firmness options so you can pick the one that works best for your California king.

Credit: Sleep Foundation Test Lab

Price

$1,624

Mattress Type

Hybrid

Firmness Options

Medium (5), Medium Firm (6), Firm (8)

Trial Period

120 nights (30-night requirement), $99 return pickup fee

At a Glance
  • Who It’s Best for: Side and back sleepers across all body types, as well as stomach sleepers over 230 pounds.
  • Feel: Sold in cushy medium (5), balanced medium firm (6), and sturdy firm (8) designs.
  • What It’s Made of: A comfort system with four individual foam layers, followed by zoned pocketed coils with perimeter reinforcement.
  • What We Don’t Like: High profile requires a deep-pocket fitted sheet, which may mean an additional investment for shoppers.
Scoring & Reviews

The following ratings show how suitable this mattress is for different sleeping positions and sleeper weights. These scores are determined by how well the mattress supports and relieves pressure for each sleeper type.

Side Sleepers

Under 130 lbs

8/10

130-230 lbs

9.5/10

Above 230 lbs

8/10

Back Sleepers

Under 130 lbs

7.5/10

130-230 lbs

9/10

Above 230 lbs

7.5/10

Stomach Sleepers

Under 130 lbs

6/10

130-230 lbs

7.5/10

Above 230 lbs

6/10

We performed a meta-analysis on 897 validated customer reviews of the Nolah Evolution 15. This is what people who bought the mattress had to say:

  • Motion Isolation: Couples note the excellent motion isolation, which minimizes disruptions from partner movements during the night.
  • Edge Support: The edge support of the mattress is frequently highlighted, with many finding it adequate for sitting or sleeping near the edge without feeling like they will roll off.
  • Softness: Many reviewers discuss the softness of the mattress. Some find it too soft, causing discomfort, especially for heavier individuals, while others appreciate the plushness.
  • Pressure Relief and Support: Reviewers frequently highlight relief from back and shoulder pain, attributing this to the supportive foam layers and zoned coil system.
  • Heat Retention: A few reviewers note that the mattress retains heat, making it uncomfortable for some, particularly in warmer climates or for those who sleep hot.
  • Durability and Quality: Users often comment on the high quality and durability of the mattress, noting that it maintains its shape and comfort over time.

Full Details

The Nolah Evolution 15 is a pressure-relieving hybrid mattress that’s available in three firmness levels. You can choose between medium (5), medium firm (6), and firm (8) options, which Nolah has named Plush, Luxury Firm, and Firm, respectively. While materials and specifications vary a bit between models, all three feature several cooling features and a foam comfort system that hugs pressure-prone areas.

How It Performed

Each model features a quilted Euro-top that cushions without affecting the support level. In addition to the AirFoam, the Evolution 15 includes a heat escape gusset, thermal conductive fabric, and a layer of wool and cotton that are all included to help regulate temperature. A carrying handle and non-skid base allow for easy use. The zoned coil layer provides more robust support around your lower back and midsection while allowing more give beneath your shoulders and legs.

Construction Breakdown

The support core is built from pocketed coils that are zoned and reinforced at the edges. A layer of polyfoam rests above the core and prevents sleepers from sinking too deeply into the mattress, even when using the softest model. Proprietary graphite-infused polyfoam called AirFoam gently cradles your body and helps draw excess heat away from you while you sleep.

Trial, Shipping, and Warranty

Six standard sizes are available, as well as a split king size for people who own adjustable beds. Nolah provides a 120-night sleep trial as well as a lifetime warranty, though you can opt out of the free trial for added savings. Free shipping is available to shoppers in the contiguous U.S. and you can choose to add old mattress removal and set up at checkout.

Best for Couples

Leesa Sapira Hybrid

8.9 /10

Test Lab Score

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Leveraging a mixed-foam comfort section over a pocketed coil core, the Leesa Sapira Hybrid manages to find the Goldilocks feel that works for a wide range of sleepers. With above-average motion isolation for a hybrid, this is a very good option if you share your California king bed with someone who is sensitive to your movements.

Best California King Mattress - Best for Couples - Leesa Sapira Hybrid

Credit: Sleep Foundation Test Lab

Price

$1,599

Mattress Type

Hybrid

Firmness Options

Medium Firm (6)

Trial Period

100 nights (30 night requirement)

At a Glance
  • Who It’s Best for: Most side sleepers, as well as back sleepers between 130 and 230 pounds.
  • Feel: A medium firm (6) feel with gentle contouring, strong support, and a light bounce in response to movement.
  • What It’s Made of: Ventilated polyfoam, memory foam, and transitional foam in the comfort system over a support core of pocketed coils with a reinforced edge.
  • What We Don’t Like: Most people over 230 pounds will need a firmer mattress.
Scoring & Reviews

The following ratings show how suitable this mattress is for different sleeping positions and sleeper weights. These scores are determined by how well the mattress supports and relieves pressure for each sleeper type.

Side Sleepers

Under 130 lbs

8/10

130-230 lbs

9.5/10

Above 230 lbs

8/10

Back Sleepers

Under 130 lbs

7.5/10

130-230 lbs

9/10

Above 230 lbs

7.5/10

Stomach Sleepers

Under 130 lbs

6/10

130-230 lbs

7.5/10

Above 230 lbs

6/10

We performed a meta-analysis on 2257 validated customer reviews of the Leesa Sapira Hybrid. This is what people who bought the mattress had to say:

  • Comfort and Support: Many reviewers mention the mattress’s blend of comfort and support, often highlighting its suitability for side and back sleepers, and its ability to alleviate or prevent pain (back, hip, or shoulder).
  • Temperature Regulation: Customers note the breathable construction helps regulate temperature, ensuring a cooler sleep experience.
  • Durability and Longevity: Positive comments on how the mattress maintains its shape and comfort over several years without sagging or indentations.
  • Motion Isolation: The mattress performs well in minimizing motion transfer, making it an excellent choice for couples.
  • Odor and Off-gassing: Some mention initial off-gassing smells upon unpacking, but most report that the odor dissipates quickly.
  • Edge Support: Good reviews on the edge support of the mattress, which is important for those who sit on the edge of the bed or sleep near the edge.
  • Value for Money: Many users feel that the mattress provides good value for the price, especially given its comfort and durability features.

Full Details

The Leesa Sapira Hybrid is designed with balanced comfort in mind. Thick foam layers over a sturdy support core of pocketed coils allow the mattress to excel in several key performance areas, including pressure relief, edge support, and temperature control — all qualities that are important for couples seeking a new bed.

How It Performed

The Leesa Sapira Hybrid is considered medium firm (6), so sleepers should expect gentle contouring and strong overall support. Among our testers, the mattress received the most positive ratings from side sleepers who weigh at least 130 pounds, and back and stomach sleepers under 130 pounds.

The Sapira Hybrid also scores points for temperature control, thanks in large part to the aerated foam layer and steady air currents flowing through the coil system. Other major strengths include edge support and ease of movement. The responsive coils ensure most people can move across the surface without feeling trapped by the mattress, while the perimeter feels exceptionally sturdy.

Construction Breakdown

The Leesa Sapira Hybrid’s comfort system contains a top comfort layer of polyfoam over a secondary memory foam layer. The polyfoam is punched with large holes intended to promote air circulation near the surface of the mattress. This layer has a lightly responsive feel, whereas the memory foam molds to your body’s contours as you sink into the surface. This creates a feeling of both sleeping “in” and sleeping “on” the mattress.

The Sapira Hybrid also features a transitional layer of dense polyfoam over a pocketed coil system and a foam base layer. The coils are zoned for added reinforcement along the perimeter to provide pushback and reduce sinkage. A knit polyester cover encases the entire mattress.

Trial, Shipping, and Warranty

Leesa offers free ground shipping for customers in all 50 states. Sapira Hybrid orders include a 100-night sleep trial with free returns after a 30-night break-in period, and those who keep the mattress also receive a lifetime manufacturer’s warranty.

Best for Back Pain

Bear Elite Hybrid

8.5 /10

Test Lab Score

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The Bear Elite Hybrid is a memory foam hybrid, with stronger coils in the middle third of the mattress to reinforce the lumbar spine. Phase change material in the cover helps the mattress stay cool, with an optional upgrade to Celliant fabric said to boost recovery. The mattress is sold in a choice of three firmness levels.

Credit: Sleep Foundation Test Lab

Price

$1,499

Mattress Type

Hybrid

Firmness Options

Medium (5), Medium Firm (6), Firm (8)

Trial Period

120 nights (30-night break-in period)

At a Glance
  • Who It’s Best for: Side, back, and stomach sleepers across different weight groups who live with chronic or frequent back pain.
  • Feel: Available in medium (5), medium firm (6), and firm (8) designs, all of which feel distinct but hug the body to some extent.
  • What It’s Made of: Comfort layers of gel-infused memory foam and zoned transitional foam over seven-zone coils with perimeter reinforcement.
  • What We Don’t Like: Initial off-gassing smells can linger for a few nights after the mattress is unboxed.
Scoring & Reviews

The following ratings show how suitable this mattress is for different sleeping positions and sleeper weights. These scores are determined by how well the mattress supports and relieves pressure for each sleeper type.

Side Sleepers

Under 130 lbs

7.5/10

130-230 lbs

9/10

Above 230 lbs

7.5/10

Back Sleepers

Under 130 lbs

7/10

130-230 lbs

8.5/10

Above 230 lbs

7/10

Stomach Sleepers

Under 130 lbs

5.5/10

130-230 lbs

7/10

Above 230 lbs

5.5/10

We performed a meta-analysis on 3703 validated customer reviews of the Bear Elite Hybrid. This is what people who bought the mattress had to say:

  • Comfort and Support: Many reviewers highlight the mattress’s balance of comfort and support, often mentioning relief from back pain and improved sleep quality.
  • Firmness Options: Customers appreciate the various firmness options, with some opting for firmer versions after experiencing discomfort with medium firmness.
  • Temperature Regulation: Several reviews note the mattress’s ability to stay cool, which enhances sleep quality, especially in hot weather.
  • Size and Upgrade Options: Customers are pleased with the availability of different sizes and the option to upgrade, which provides flexibility for different needs and preferences.
  • Quality of Additional Products: Positive remarks on the quality of accompanying products like pillows and sheets, which are often included as free additions.
  • Motion Isolation: Many reviewers highlight the mattress’s excellent motion isolation, making it ideal for shared sleeping arrangements.

Full Details

Our testers with back pain often benefit from mattresses with cushioning for the spine and robust support to maintain healthy sleep posture. The Bear Elite Hybrid is a hybrid with foam layers that relieve pressure and evenly distribute weight, while a coil system keeps your body on an even plane. With three firmness options to choose from, you can pick the design best suited for your sleep position and body type.

How It Performed

The medium firm (6) and firm (8) options of the Bear Elite Hybrid are easy to move across without sinking or feeling stuck. This can be attributed to a coil system that makes the surface bouncy and reinforces the perimeter, which may appeal to couples who prioritize a responsive mattress for sex. The Celliant-blend and PCM cover effectively keeps the surface cool by offsetting heat retention from the foam layers. Steady airflow through the coil layer provides additional thermoregulation.

The medium (5) model is best suited for side and back sleepers up to 130 pounds, since these sleepers need a fair amount of cushioning to cradle the shoulders, hips, and spine. The medium firm model felt most comfortable to side sleepers over 130 pounds and back sleepers up to 230 pounds. The firm option earned its highest marks from stomach and back sleepers over 130 pounds.

Construction Breakdown

The Bear Elite Hybrid comes in medium, medium firm, and firm options. All three models begin with a quilted cover and layer of adaptive memory foam. Underneath is a polyfoam transitional layer that acts as a buffer between your body and the coils. These comfort layers vary in firmness depending on which firmness option you choose. Pocketed coils reinforce the sleep surface and strengthen the edges of the mattress. The coils rest on a polyfoam base layer for extra stability.

The cover is made of a proprietary fabric blend that integrates Celliant, a material engineered to absorb your body heat, turn it into infrared energy, and confer it back to you to promote recovery. The cover is also infused with phase change material (PCM) that helps regulate temperature.

Trial, Shipping, and Warranty

Bear’s 120-night sleep trial allows you ample time to test the Bear Elite Hybrid and decide whether it meets your needs. Should you decide to keep the mattress, you’ll also qualify for a lifetime manufacturer’s warranty. Shipping is free for all orders in the contiguous U.S.

Best Cooling

Brooklyn Bedding Aurora Luxe

9.2 /10

Test Lab Score

Shop at Brooklyn Bedding

25% off sitewide. Code: SPRING25

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Shop at Brooklyn Bedding

25% off sitewide. Code: SPRING25

Brooklyn Bedding set out to deliver the pressure-relieving benefits of memory foam without the heat retention. The Aurora Luxe features a cooling phase change cover, open cell foams with copper and gel infusions, and a hybrid design that allows heat to escape through the coil base layer. It’s sold in three firmness options and is available in split or regular California king.

Credit: Sleep Foundation Test Lab

Price

$1,586

Mattress Type

Hybrid

Firmness Options

Medium Soft (4), Medium Firm (6), Firm (7)

Trial Period

120 nights (30-night requirement)

At a Glance
  • Who It’s Best for: People who appreciate a mattress that hugs them but also run hot in bed.
  • Feel: Sold in medium soft (4), medium firm (6), and firm (7) models – all conform to the body and resist heat retention.
  • What It’s Made of: Comfort layers of gel-infused polyfoam and copper-infused memory foam, followed by multi-zone pocketed coils with a reinforced perimeter.
  • What We Don’t Like: Firmness exchanges are not allowed during the trial and returns incur a $99 fee.
Scoring & Reviews

The following ratings show how suitable this mattress is for different sleeping positions and sleeper weights. These scores are determined by how well the mattress supports and relieves pressure for each sleeper type.

Side Sleepers

Under 130 lbs

8/10

130-230 lbs

9.5/10

Above 230 lbs

8/10

Back Sleepers

Under 130 lbs

7.5/10

130-230 lbs

9/10

Above 230 lbs

7.5/10

Stomach Sleepers

Under 130 lbs

6/10

130-230 lbs

7.5/10

Above 230 lbs

6/10

We performed a meta-analysis on 3474 validated customer reviews of the Brooklyn Bedding Aurora Luxe. This is what people who bought the mattress had to say:

  • Height and Thickness: Many reviewers mention the mattress being taller or thicker than anticipated, requiring adjustments like new bed sheets.
  • Comfort and Support: Consistent mentions of the mattress providing good support and comfort, suitable for various sleeping positions and body types.
  • Cooling Features: A significant number of people appreciate the cooling aspect of the mattress, which is particularly beneficial for hot sleepers.
  • Firmness Levels: Some reviewers note discrepancies in the expected versus actual firmness levels, with some finding the mattresses softer than anticipated.
  • Edge Support: Mixed reviews on edge support, with some finding it adequate and others noting it could be improved. We found it to be relatively average for a hybrid
  • Material Quality: Reviews often mention the high quality of materials, though some note issues with sheets slipping off due to the sleekness of the mattress cover.
  • Smell and Off-Gassing: Some mention a noticeable smell upon unpacking that dissipates over time.

Full Details

The Brooklyn Bedding Aurora Hybrid is a hybrid model available in three different firmness levels. Across all firmness options, the mattress is designed with cooling features that should keep the bed at a comfortable, cool temperature for hot sleepers.

How It Performed

Given its thick foam comfort system, the Aurora Hybrid excels at relieving pressure in areas that are prone to painful pressure buildup at night. During tests, the two softer models earned especially high marks from back and side sleepers under 130 pounds. Side sleepers between 130 and 230 pounds also found these firmness levels comfortable, thanks to the even mix of cushioning for the shoulders and hips and support for the lower back. The firm model appealed most to back and stomach sleepers who weigh over 130 pounds. Hot sleepers found the bed very comfortable, thanks to air circulation through the coils and PCM in the cover.

Construction Breakdown

Shoppers can choose between a medium soft (4), medium firm (6), and firm (7) version of the mattress. All models begin with a top layer of proprietary CopperFlex foam, which conforms to the body and provides targeted relief to areas of the body that need it most. This is followed by a TitanFlex foam layer, which balances additional contouring with a slightly bouncy feel. The medium soft and medium firm options then feature a 1-inch layer of memory foam, which enhances pressure relief, while the firm model uses a layer of VariFlex to give the bed a firmer feel. If you prefer more cushioning from your sleep surface, the optional “Cloud” foam layer can be added to the top of your comfort system for an extra fee.

Underneath the comfort layers is a sturdy coil system zoned to offer stronger support to the lower back while relieving pressure in areas like the shoulders and hips. The cover is composed of a soft fabric infused with TitanCool, a phase change material (PCM) designed to keep the bed surface cool.

Trial, Shipping, and Warranty

Customers receive a 120-night sleep trial with their purchase, and Brooklyn Bedding offers a lifetime warranty with the mattress. The bed ships free within the contiguous U.S.

Best for Heavy Sleepers

Titan Plus Luxe

8.4 /10

Test Lab Score

Shop at Titan

25% off sitewide. Code: SPRING25

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Shop at Titan

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The Titan Plus Luxe is here to prove that you can make a mattress for people up to 500 pounds that’s supportive without being uncomfortably firm. Quilted gel foam and two layers of polyfoam offer responsive cradling, with a pocketed coil support core to support spinal alignment. The bed is a good choice for couples in different weight groups, as it doesn’t feel too hard for lighter sleepers, and it’s available in split and standard California king sizes.

Credit: Sleep Foundation Test Lab

Price

$1,312

Mattress Type

Hybrid

Firmness Options

Medium Firm (6)

Trial Period

120 nights (30-night requirement, $99 return fee)

At a Glance
  • Who It’s Best for: Side and back sleepers who weigh at least 130 pounds.
  • Feel: A medium firm (6) with light cushioning on the surface, robust underlying support, and significant bounce in response to movement.
  • What It’s Made of: Three polyfoam comfort layers, followed by a robust coil system in the support core.
  • What We Don’t Like: Probably too firm for most people under 130 pounds.
Scoring & Reviews

The following ratings show how suitable this mattress is for different sleeping positions and sleeper weights. These scores are determined by how well the mattress supports and relieves pressure for each sleeper type.

Side Sleepers

Under 130 lbs

7/10

130-230 lbs

8/10

Above 230 lbs

8/10

Back Sleepers

Under 130 lbs

7.5/10

130-230 lbs

7.5/10

Above 230 lbs

7/10

Stomach Sleepers

Under 130 lbs

7/10

130-230 lbs

6.5/10

Above 230 lbs

6/10

We performed a meta-analysis on 1931 validated customer reviews of the Titan Plus Luxe. This is what people who bought the mattress had to say:

  • Firmness Level: The Titan Plus Luxe mattress offers a firm support that is appreciated by those who need it, but may be too firm for many, likened to “sleeping on plywood” by one user.
  • Supportive for Plus Size: Specifically designed to be supportive for plus size individuals, many reviewers found the mattress to be supportive and comfortable, helping alleviate back pain.
  • Edge Support Issues: Several users reported that the edge support of the mattress is lacking, making it difficult to sit on the edge or causing a feeling of instability.
  • Motion Transfer: Some users experienced noticeable motion transfer on the mattress, which could be disruptive for people who share the bed.
  • Odor: A few users noted a chemical smell upon unboxing the mattress, which could be off-putting, though this will dissipate in a few days.
  • Positive Customer Service Experiences: Many reviewers highlighted excellent customer service, particularly appreciating the easy return and exchange policies when the mattress did not meet their expectations.

Full Details

Many mattresses that cater to heavy sleepers end up sacrificing some cushioning for support, but the Titan Plus Luxe from Brooklyn Bedding is a notable exception. This hybrid model has a foam and coil design that cushions your body while still offering plenty of sturdiness to keep you well supported.

How It Performed

With an overall medium firm (6) feel, the Titan Plus Luxe felt very supportive during our tests, while still offering pressure relief for areas like the shoulders and hips. If you need a lot of support but have a co-sleeper who favors strong pressure relief, this is a nice happy medium. This design felt comfortable for a wide range of testers on our team, though it was most comfortable for side sleepers who weighed over 230 pounds and back sleepers between 130 and 230 pounds.

Strong coils reinforce the bed’s perimeter, so we found the edges didn’t sag much when we sat on them. Airflow through the coils helps reduce heat retention, so hot sleepers shouldn’t overheat excessively. If you’d like to ensure a cooler surface, you can always purchase the cooling panel.

Construction Breakdown

The surface of the mattress is quilted with an inch of memory foam infused with a cooling gel. This is followed by a thicker layer of TitanFlex foam, which contours to the body but less so than the memory foam. Beneath is a transition layer made of Energex foam with a firmer feel, followed by a thick layer of TitanCaliber coils that generate strong support. For an additional fee, you can add a GlacioTex Cooling Cover. This is made with phase change material that helps keep the surface cool.

Trial, Shipping, and Warranty

The Titan Plus Luxe ships for free and comes with a 120-night sleep trial. The mattress is also backed by a lifetime warranty.

Best Organic

Birch Mattress

8.5 /10

Test Lab Score

Shop at Birch

25% off sitewide

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The Birch Mattress is a hybrid model made with eco-conscious materials including organic cotton, organic wool, and natural latex. It boasts all the typical advantages of a latex hybrid, namely a breathable, responsive construction and a strong perimeter so you can sleep right up to the edge of your California king bed.

Credit: Sleep Foundation Test Lab

Price

$1,499

Mattress Type

Latex Hybrid

Firmness Options

Medium Firm (6)

Trial Period

100 nights (30-night requirement)

At a Glance
  • Who It’s Best for: People who run hot in bed and appreciate a bouncy sleep surface.
  • Feel: A medium firm (6) feel with modest contouring and a steady bounce when you move on the surface or change positions.
  • What It’s Made of: Organic wool batting and ventilated Talalay latex in the comfort system, followed by pocketed coils with perimeter reinforcement in the support core.
  • What We Don’t Like: Responsive design may cause movement-related sleep disruptions for couples.
Scoring & Reviews

The following ratings show how suitable this mattress is for different sleeping positions and sleeper weights. These scores are determined by how well the mattress supports and relieves pressure for each sleeper type.

Side Sleepers

Under 130 lbs

6/10

130-230 lbs

7.5/10

Above 230 lbs

7.5/10

Back Sleepers

Under 130 lbs

7.5/10

130-230 lbs

8/10

Above 230 lbs

7.5/10

Stomach Sleepers

Under 130 lbs

6/10

130-230 lbs

8/10

Above 230 lbs

7/10

We performed a meta-analysis on 1917 validated customer reviews of the Birch Mattress. This is what people who bought the mattress had to say:

  • Comfort and Support: Many reviewers mention the mattress provides excellent support and comfort, particularly noting improvements in back and shoulder pain.
  • Dual Firmness: The flippable design offering a choice between firm and soft sides is frequently appreciated, allowing users to customize their sleeping experience.
  • Durability and Quality: Customers commend the high-quality, eco-friendly materials and construction, expressing satisfaction with the mattress’s durability and longevity. The use of organic and natural materials not only ensures comfort but also contributes to the mattress’s overall durability.
  • Temperature Regulation: Customers appreciate the mattress’s ability to maintain a comfortable sleep temperature, attributing this to its natural and organic materials. The use of organic wool and natural latex contributes to effective temperature regulation, enhancing overall sleep quality. .
  • Price: Opinions on the mattress’s price vary, with some finding it a good value and others considering it somewhat expensive.
  • Weight and Maneuverability: The mattress is noted to be heavy, making it difficult to move or flip without assistance.
  • Smell and Off-gassing: A few reviewers mention an initial off-gassing smell that dissipates over time.
  • Edge Support: Mixed reviews on edge support, with some some noting it could be improved.

Full Details

The Birch Mattress is a high-end mattress made with wool, latex, and steel coils. The premium materials offer more comfort than the average hybrid model, and they boast several certifications to ensure the bed is as eco-friendly as it is comfortable.

How It Performed

With a medium firm (6) feel, the Birch is one of the most balanced mattresses we’ve tested in our lab. Most sleepers on our team felt comfortable on the mattress regardless of sleep position or body type. That said, the bed is best suited for side sleepers who weigh at least 130 pounds and back and stomach sleepers up to 230 pounds. The plush wool layers cradled our bodies to relieve pressure buildup in the shoulders, hips, and spine, but the coil system and latex pushed back to generate plenty of support.

The bed excelled at cooling during our temperature neutrality tests. All the materials are naturally breathable, and the cotton and wool excel at wicking moisture. The coils promote plenty of airflow through the bed’s interior, so we recommend this bed for hot sleepers.

Construction Breakdown

The mattress begins with a plush quilted Euro-top and organic cotton cover. Next is a layer of wool that cushions the body and serves as a fire retardant, followed by an additional wool layer. The wool enhances the plushness and regulates temperature thanks to the material’s natural breathability. A Talalay latex layer balances contouring and bounce, while the sturdy steel coils provide sturdy support for your entire body. Extra reinforcement along the longer sides of the bed helps prevent sagging on the edges.

The cotton is GOTS-certified organic, the latex has certification from the eco-INSTITUT, and the entire mattress is GREENGUARD Gold-certified to show it has met rigorous health and safety standards.

Trial, Shipping, and Warranty

The Birch Mattress comes with a 100-night sleep trial so that you can test the mattress at home. It also includes a lifetime warranty. Shipping is free to customers in the contiguous U.S.

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Best Overall

WinkBed

8.9 /10

Test Lab Score

Get $300 off all mattresses at Winkbeds

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A top-performing hybrid mattress ideally suited to the California king size.

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Most Comfortable

Helix Midnight Luxe

9.7 /10

Test Lab Score

25% off sitewide

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Pillow-top cushioning and zoned lumbar support for an extra-comfortable California king bed.

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Best Value

Silk & Snow Mattress

7.7 /10

Test Lab Score

$150 off at Silk & Snow

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An affordable memory foam mattress that minimizes motion transfer for couples sharing a California king.

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Best California King Mattress - Best Value - Silk & Snow Mattress

Credit: Sleep Foundation Test Lab

Best Luxury

Saatva Classic

9.4 /10

Test Lab Score

Save up to $600

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A durable, high-end design that ticks all the important boxes for a California king size mattress.

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Best for Side Sleepers

Nolah Evolution 15

9.2 /10

Test Lab Score

25% off sitewide. Save an additional $50 with code: SF50

Shop at Nolah

Zoned pressure relief for side sleepers in a California king-friendly hybrid mattress model.

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Best for Couples

Leesa Sapira Hybrid

8.9 /10

Test Lab Score

25% off all mattresses

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Memory foam and coils are a winning combo, delivering top-notch motion isolation for couples in this hybrid California king mattress.

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Best for Back Pain

Bear Elite Hybrid

8.5 /10

Test Lab Score

35% off + free pillows with code: SF35

Shop at Bear

Zoned pocketed coils ensure healthy spinal alignment in this California king.

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Best Cooling

Brooklyn Bedding Aurora Luxe

9.2 /10

Test Lab Score

25% off sitewide. Code: SPRING25

Shop at Brooklyn Bedding

Three firmness options and high-tech cooling features make this a no-brainer for California king sleepers in warm climates.

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Best for Heavy Sleepers

Titan Plus Luxe

8.4 /10

Test Lab Score

25% off sitewide. Code: SPRING25

Shop at Titan

A plush, supportive hybrid that accommodates heavier California king sleepers and their partners.

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Best Organic

Birch Mattress

8.5 /10

Test Lab Score

25% off sitewide

Shop at Birch

A sustainably built hybrid with numerous benefits for a California king mattress.

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What are the Main Differences Between a King and a California King?

King and California king size beds differ in terms of their measurements and how much space they take up. The two beds have the following measurements:

  • King: 76 inches x 80 inches
  • California king: 72 inches x 84 inches

Taller people who tend to sleep stretched out might prefer the California king since it measures 7 feet in length. People with pets might also prefer the additional length, so pets can sleep comfortably at the end of the bed.

The size and shape of your bedroom can also influence which king size you prefer. The beds take up the following square footage:

  • King: 42.22 square feet
  • California king: 42 square feet

Bedding is another factor to consider when choosing between a standard and California king. The standard king mattress is more common, so there are more bedding options for that size and it’s likely easier to find low-cost bedding.

How to Shop for the Best California King Mattress

Different people need different characteristics in a mattress depending on their preferences, sleep position habits, and body weights. The following factors determine how a mattress feels to you, how long it will last, how well it supports you throughout the night, and more.

  • Price: Most mattress companies offer king and California king sizes at the same price, so mattress cost isn’t usually a differentiating factor between those two sizes. Mattress prices often differ based on the quality of materials used. Online retailers have been able to offer lower prices by cutting costs associated with showrooms and stores.
  • Sleeping Position: Your preferred sleep position influences which mattress is best for you. People who sleep on their backs might prefer firmer mattresses that offer adequate lumbar support. Side sleepers often need softer mattresses so they don’t develop pressure points in their shoulder and hip areas. Bodyweight also factors in, with heavier folks needing firmer mattresses.
  • Mattress Type: Mattresses come in multiple constructions: innerspring, all-foam, hybrid, latex, and airbed. Each mattress type has its own feel. Innerspring and latex mattresses tend to be bouncy, while hybrid and foam beds are more conforming. Of course, there is also quite a bit of variation within each mattress type.
  • Contouring: Contouring is the degree to which a mattress conforms to or cradles weight placed on top of it. Memory foam is the mattress material known for providing the most contouring. Memory foam can “hug” the body, providing a sensation that many sleepers enjoy. Contouring mattresses tend to cushion the body well and relieve pressure. All-foam mattresses and hybrid mattresses with memory foam are most contouring.
  • Quality Materials: Each mattress material, from steel coils to memory foam, comes in a range of quality levels. Often, but not always, higher-quality materials come with a higher price tag. When it comes to memory foam and polyfoam, higher density is generally higher quality. In the world of latex, typically the more natural the product, the higher the quality.
  • Firmness Level: The mattress firmness scale ranges from 1 to 10 and provides a standardized measurement according to which the firmness of different mattresses can be compared. Most mattresses fall between 3 and 8 in terms of firmness, while most sleepers prefer mattresses in the 4 to 6 range.
  • Edge Support: Edge support to how firm the edges of a mattress remain when weight is put on them. When a mattress has strong edge support, sleepers can use the full surface of the bed without fear of rolling off due to buckled edges. Innerspring mattresses are known for superior edge support.
Tester uses a weight to test edge support on the GhostBed Classic
Tester uses a weight to test edge support.
  • Temperature Neutrality: When a mattress is truly temperature neutral, it doesn’t cause a person to feel too hot or cold throughout the night. Sleeping hot is a problem many people face. Foams and other materials that contour closely also tend to trap heat. There are many efforts manufacturers make to counteract this and achieve temperature neutrality.
  • Noise: Some mattresses, particularly those with innersprings, can make noise when weight is put on them or movement occurs. Individually-encased pocketed coils are generally quieter than innersprings, which can squeak. All-foam mattresses tend to be the quietest of all and are virtually silent.
Mattress-Survey-Graphic_Desktop

Types of Mattresses

There are five major mattress constructions on the market today: innerspring, foam, latex, hybrid (a combination of coils with foam or latex), and airbed. Generally, since the mattresses within each category are constructed similarly, they share commonalities and features.

That being said, there is plenty of variation within each mattress type category as well. Individual models of mattresses within a larger group fall across a spectrum in terms of quality, materials used, and performance.

Hybrid

Definition: Hybrid mattresses are an attempt to combine the best characteristics of different mattress types into a single bed. Hybrids contain a coil support core and comfort layers of either memory foam or latex. They are usually cooler and have stronger edge support than all-foam beds while providing more cushion than the average innerspring mattress.

Widely Comfortable: California king mattress shoppers often share a bed with a partner, kids, or pets. Hybrids can be a good choice for bed sharing because they tend to stay temperature neutral due to airflow through the coil layer. Their feel is often a mix of responsiveness and conforming, which can be a good compromise for people with different preferences.

Innerspring

Definition: Springs make up the support core of innerspring mattresses and create a bouncy, responsive bed. Innersprings tend to remain temperature neutral and provide a firm sleeping surface. As one of the oldest mattress technologies, innerspring mattresses are some of the most affordable beds available.

Cooling Firmness: Innerspring mattresses allow for a lot of airflow and, as a result, remain temperature neutral throughout the night. People who sleep hot or share a bed will find that an innerspring mattress doesn’t trap heat the way some all-foam or hybrids might.

Latex

Definition: Latex is made from natural or synthetic rubber and can be used in a mattress’s support core, comfort layers, or both. Latex mattresses tend to be the longest lasting and can potentially last decades. Sleepers who enjoy a soft yet responsive mattress surface will be happy with a latex mattress.

Responsive Comfort: Latex provides cushion and contouring without sinkage. People who share a bed can enjoy the softness of latex without worrying that they will sink too far into the bed or into each other.

Airbed

Definition: Airbeds, not to be confused with inflatable air mattresses, are beds that use air chambers instead of coils, foam, or latex as their support core. Often, the air levels in the mattress can be controlled, allowing sleepers to instantly make their mattresses softer or firmer to meet their needs.

Adjustable Support: Many airbeds have separate, adjustable firmness levels on each side of the bed, which is a major benefit to people who share a bed. If you fall in a different weight group or have different mattress preferences than your sleep partner, you could adjust only your side of the bed in many airbeds.

Foam

Definition: Foam beds are known for the “hugging” sensation of memory foam, though not all foam beds are extremely conforming. Foam makes up both the support core and comfort layers, although some beds have additional comfort layer materials as well. Foam beds can tend to trap heat, so many are constructed with infusions of cooling material to help sleepers stay temperature neutral.

Contouring Relief: Foam mattresses can be a good choice for people who share a bed with someone who prefers a different sleep position. Memory foam tends to provide the most cushion and pressure relief, and a well-constructed foam bed will be supportive of all sleep positions.

How We Test: Your Comfort Is Our Science

Our industry-leading product testing team cares deeply about improving your sleep. Having a holistic understanding of a mattress’s role as part of a sleep system is paramount to our testing process. Since a bed’s comfort and feel depend largely on body weight and sleeping position, our testing team represents a wide range of body types, sleep positions, and comfort preferences.

In our Seattle-based Test Lab, we use an objective, hands-on process to evaluate mattresses across performance categories. The following are the key guidelines that inform our performance ratings. Our ultimate goal is to ensure you have all the information you need to make the best purchase decision for you.

Construction analysis: We begin testing each mattress by analyzing its design and making note firmness, height, individual layer composition, and sticker price. This allows us to evaluate qualities like support, durability, and value.

Product testing: Firsthand testing is crucial to our evaluation and ratings system. We use a wide range of tools and technology to test mattresses in six performance categories: motion isolation, pressure relief, temperature control, ease of movement, edge support, and odor potential.

Field testing: In addition to lab-based tests, we base our ratings on feedback from field testers who use the mattresses in their own homes. They spend several weeks collecting data — this gives us insights into how the mattress performs night after night for an extended period.

User testing: We curate feedback verified owners have provided in surveys, sleep stories, and product reviews. This helps us evaluate our initial findings and, if needed, tweak our ratings to reflect real-world experiences.

How We Determine Our Overall Scores

To determine a mattress’s overall score, we assign weighted percentages to performance categories based on how important they are to the individual sleep experience. For instance, areas like pressure relief and temperature control tend to matter more to people than something like off-gassing, and because more people sleep on their side and back than on their stomach, we weigh those positions more heavily.

Performance Categories

Motion Isolation

This criteria alludes to the amount of motion a mattress absorbs when a sleeper moves on the surface. We use two testers lying side by side to evaluate motion isolation, who each feel for transfer while the other person moves on the mattress.

Temperature Control

To determine how well a mattress regulates temperature, we perform temperature tests and look closely at its materials and construction. Many mattresses are designed with cooling components meant to reduce heat retention.

Pressure Relief

A bed with strong pressure relief excels at preventing pressure from building up in areas like the shoulders and hips. Beds with even contouring and weight distribution are top performers when it comes to pressure relief.

Off-Gassing

A mattress in a box may release unpleasant chemical odors for a short period after you’ve unboxed it. The initial smell may be strong but typically fades within 2 or 3 days.

Ease of Movement

This criteria reflects how easily a sleeper can move across a bed’s surface. Responsive surfaces made of latex typically perform better than foam surfaces, which can inhibit movement.

Edge Support

We perform sit tests along a bed’s perimeter to measure how well the edges push back against weight. Mattresses with strong edge support have minimal sagging when sleepers sit on or lie close to the perimeter.

Dive Deeper – Mattress Guides by Size

If you’re still not sure a California king mattress is the right choice for your needs, you can review our detailed recommendations broken down by size.

Last Things to Consider When You’re Buying a California King

  • Bed Frame: Since California king mattresses are less common, bed frames might be harder to find. For simplicity, you could purchase a mattress from a manufacturer that also sells bed frames.
  • Sheets and Bedding: California king size sheets and bedding are less common than standard king size sheets and bedding. As a result, you may have to do more searching and deal with having fewer bedding options.
  • Doorways and Room Size: California king mattresses run 4 inches longer length-wise and 4 inches shorter width-wise than standard kings. Anyone interested in buying a California king should take this into consideration when measuring their spaces, because it could make the mattress easier or more difficult to install.
  • Mattress Weight and Setup: California king and standard king mattresses have nearly identical weights, though California kings might weigh slightly less since they are slightly smaller in terms of square footage. Both mattress setup processes are generally identical. White Glove delivery services include in-home assembly, which may be worth it if you need assistance setting up a larger mattress.

Still have questions?

Our product experts have extensive experience testing just about every sleep product on the market.

Send an email to [email protected] with your questions and we’ll help you find exactly what you’re looking for.

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