Best Split King Mattress

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.

• 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.

The WinkBed is a standout split king mattress because it’s versatile, well-crafted, and exceptionally supportive. This luxury hybrid pairs an adaptive comfort system with zoned coils, resulting in a design that reinforces heavier areas of the body without feeling excessively stiff beneath the head and legs. Four firmness levels are available, ensuring most people can find a comfortable option regardless of how much they weigh and which sleep position they prefer, and WinkBeds’ generous trial period allows for free exchanges if you aren’t satisfied with your initial selection.

How It Performed

Our testing shows the medium soft feel is best suited to side sleepers up to 230 pounds and back sleepers under 130 pounds. This model’s foam layers provide deep cushioning, so people who weigh more — stomach sleepers in particular — may sink to an uncomfortable degree. These individuals will likely find the medium firm or firm designs most comfortable. We found the WinkBed Plus provided adequate support for back and stomach sleepers weighing more than 230 pounds, but felt a bit too firm for the rest of our testing team.

Construction Breakdown

The WinkBed’s construction depends on which firmness you choose. Standard models available in medium soft (4), medium firm (6), and firm (7) feels begin with adaptive polyfoam quilted to the bottom of the cover, creating a bit of plushness when you get into bed. A second foam layer follows, but its denser composition keeps your body upright while cushioning sensitive areas along the spine. A fourth firmness option, the WinkBed Plus (8), is specifically designed for people who weigh more than 230 pounds. This model swaps out the second foam layer for 2.5 inches of zoned latex.

All WinkBed mattresses feature pocketed coils in their support cores. Thicker coils beneath your midsection push back against the extra weight from your torso and hips, and also line the perimeter to minimize sinkage when you sleep near the edges or get in and out of bed. A breathable, moisture-wicking Tencel cover encases the mattress, completing its luxury hybrid design.

Trial, Shipping, & Warranty

WinkBeds provides free ground shipping in the contiguous United States. The initial sleep trial runs for 120 nights. If you decide to exchange for a softer or firmer model during this time frame, the replacement comes with its own 60-night trial. WinkBeds’ also backs each purchase with a lifetime warranty.

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.

A new mattress and adjustable bed can be a useful investment if you deal with frequent shoulder, back, or hip pain — but most of these purchases amount to thousands of dollars. Nectar’s Adjustable Bundle is much more affordable than the average mattress-and-base combo, and you’ll also receive pillows and a sheet set with your order.

How It Performed

How your Nectar Adjustable Bundle performs largely depends on which mattress model you choose. That said, most side sleepers on our team weighing at least 130 pounds say all mattresses in the Nectar lineup meet their needs. Back sleepers up to 230 pounds also found most Nectar mattresses comfortable.

Our tests show all Nectar models excel at motion isolation for couples and alleviate pressure well. You may notice some heat buildup on Nectar mattresses due to their thick memory foam comfort layers, so cooling sheets or a breathable mattress protector are recommended.

Construction Breakdown

Six Nectar mattresses are available with the bundle. These options include the all-foam Nectar Mattress, Nectar Premier, and Nectar Premier Copper models, or the Nectar Hybrid, Nectar Premier Hybrid, and Nectar Copper Hybrid if you prefer a coil-based support system. You can also choose between two adjustable bases, the Classic and Premier — the former costs less, while the latter has more bells and whistles. Two pillows, a sheet set, and a mattress protector complete the bundle.

We recommend the Premier base if you are hoping to alleviate aches and pains. A customizable three-zone massage function produces gentle vibrations to reduce discomfort where you feel it most. You can also choose between a wide range of upper and lower body positions, including zero gravity with your legs elevated over your head and torso. Additional features include under-bed lighting, USB ports for charging your devices overnight, and adjustable legs.

Trial, Shipping, & Warranty

In addition to its affordable sticker price, the Nectar Mattress qualifies for free ground shipping anywhere in the contiguous U.S. Customers also receive a free sleep accessories bundle with their purchase, which includes a pillow, sheet set, and mattress protector. Nectar’s 365-night sleep trial is one of the longest in the online mattress industry. Owners who keep the mattress after the trial ends also receive a lifetime warranty against structural defects.

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.

• 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.

Saatva has released many different mattresses over the years, but the flagship Classic innerspring has remained enduringly popular. A coil-on-coil design sets the Classic apart from competitors. Gentle pocketed microcoils provide transitional support by cushioning your body, while the support core contains robust low-gauge hourglass coils made from recycled steel. You’ll notice plenty of bounce when you get in and out of bed — this helps you move across the surface without feeling stuck — and the perimeter feels exceptionally sturdy.

How It Performed

Tests show the soft (3) design is ideal for side sleepers up to 230 pounds, while the firm (8) is best suited to back and stomach sleepers weighing 130 pounds or more. The medium firm (6) model should meet your needs if you’re looking for a balance of cushioning and support.

Temperature control is one area where the Saatva Classic really shines. Steady airflow through both coil layers helps ensure a comfortable interior temperature, and the breathable organic cotton cover keeps you cool on the surface. Our tests also show the Classic excels at edge support, and most of our team members had little to no trouble moving on the mattress.

Construction Breakdown

All three firmness levels share a similar comfort system featuring a Euro-top with sewn-in cushioning, wrapped in a knit cover made from organic cotton. The Plush Soft and Luxury Firm models incorporate 1.25 inches of soft polyfoam, while the Firm model uses 1.5 inches of firm polyfoam.

Below the Euro-top, layers of polyfoam and memory foam add plushness and targeted lumbar support, helping to maintain proper spinal alignment. A transitional layer of 14.5-gauge foam-encased coils adapts to the sleeper’s body while promoting strong airflow.

The support core consists of 13-gauge hourglass coils designed for durability and airflow. The mattress is available in two height options: the 11.5-inch version includes a 4-inch layer of coils, while the 14.5-inch version features a 7-inch coil layer. A thin layer of loft and fiber pads supports the coil system, while a foam encasement reinforces the mattress edges for better stability and reduced sinkage.

Trial, Shipping, & Warranty

Free White Glove Delivery and setup are available in the United States. The Saatva Classic comes with a 365-night trial. If you decide to return or replace your mattress, a $99 transportation fee will apply. The mattress is backed by a lifetime warranty.

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.

• Comfort and support: Many reviewers mention that the mattress is very comfortable and provides good support for various sleeping positions.
• Improvement in sleep quality: Several users report a significant improvement in sleep quality, including better rest and reduced pain.
• Firmness options: People appreciate the availability of different firmness levels, and some discuss their experiences with medium, firm, or pillow-top options.
• RV suitability: A number of reviews specifically mention using the mattress in RVs, noting it as a substantial upgrade from typical RV mattresses.
• Initial odor/smell: Some reviewers note a mild odor upon unpacking, but it typically dissipates quickly.
• Edge support: The mattress is often noted for having good edge support, which is particularly valued by those who sit on the edge of the bed.
• Price and value: Many reviewers feel the mattress is well-priced for the quality and comfort it provides.
• Durability concerns: A few reviewers express concerns about how the mattress will hold up over time, although these comments are not widespread.

Shoppers looking for an affordable split king may want to consider the Brooklyn Bedding Signature Hybrid. Shoppers can choose between three firmness levels that share similar materials but have distinct feels. You can opt for medium soft (4), medium firm (6), or firm (8).

How It Performed

People who weigh more than 230 pounds are likely to prefer the robust support of the firm, the medium firm is well suited to those who weigh between 130 pounds and 230 pounds, and those under 130 pounds should enjoy the plush feel and pressure relief of the medium soft version. Each model relieves pressure and regulates temperatures well, especially considering the mattress’ price-point.

Construction Breakdown

Exact specifications vary slightly between firmness options, but all three share the same basic comfort system materials. The surface has a quilted top designed to resist body impressions. Beneath that, a layer of patented TitanFlex polyfoam is engineered to adapt to your body’s movements throughout the night. VariFlex, another proprietary polyfoam, relieves pressure points by compressing deeply.

The support core contains 8 inches of pocketed coils that are individually wrapped to minimize how much motion transfers across the mattress’ surface. Higher-caliber coils at the perimeter give this model extra support around the edges. A thin polyfoam layer provides a stable base that helps reinforce the support core.

Trial, Shipping, & Warranty

The Signature Hybrid carries a lifetime warranty and purchases within the contiguous U.S. include free shipping and a 120-night trial.

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.

• 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.

The Nolah Evolution 15 is a luxury Euro-top hybrid available in three firmness levels to accommodate different weights and sleep positions. A sophisticated design with a balance of contouring and support makes the mattress a good option for adjustable owners seeking a split king.

How It Performed

The Evolution 15 earns high marks for temperature neutrality thanks to its breathable foams and steady airflow throughout the coil system. The perimeter coils are also reinforced to minimize sinkage when you sleep near the edges or get in and out of bed. This push-back makes the mattress easy to move across for most people.

The medium (5) feel offers the closest contouring and cushioning, making it best suited to side and back sleepers who weigh up to 230 pounds. The firm (8) feel is most supportive, so back and stomach sleepers who weigh more than 230 pounds will probably prefer this option instead. The medium firm (6) feel is most balanced, and should be comfortable for anyone in the range of 130 to 230 pounds regardless of their primary sleep position.

Construction Breakdown

Under a foam-padded Euro-top, the Evolution 15 is constructed with two layers of adaptive foam that distribute your weight and target pressure points along the spine. These foams are also designed to absorb a minimal amount of body heat and help you stay cool during the night, even if you tend to run warm in bed. A cover made of proprietary ArcticTex fabric provides additional cooling.

The support core contains pocketed coils to stabilize and reinforce the mattress without creating too much motion transfer or making the surface feel excessively stiff. This layer is divided into different zones based on coil gauge, with the thickest coils located beneath your midsection to prevent uncomfortable sinkage.

Trial, Shipping, & Warranty

Nolah offers free ground shipping throughout the contiguous U.S. The Evolution 15 comes with a 120-night sleep trial, though customers may forgo the trial period to lower the cost of their order – though this disqualifies them from returning the mattress at any point. All purchases also include a lifetime warranty against structural defects.

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.

• 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.

Bear has earned a reputation for mattresses and other sleep products that deliver exceptional cooling. The Elite Hybrid is no exception. A cover made from breathable Celliant-blend fabric, copper-infused memory foam, and steady air circulation through the coil layer allow you and your partner to sleep at a comfortable temperature throughout the year. Co-sleepers should also enjoy the Elite Hybrid for its strong edge support and good responsiveness for sex.

How It Performed

During our hands-on tests, the medium (5) design earned favorable ratings from side and back sleepers weighing up to 230 pounds. This model closely contours and cradles the spine, alleviating pressure in the process. Those who need slightly more support should opt for the medium firm (6) design. Our side sleepers between 130 and 230 pounds and back sleepers weighing up to 230 pounds found this model comfortable and supportive in equal measure. For people who weigh more than 230 pounds, the firm (8) design should provide adequate reinforcement.

Construction Breakdown

The Bear Elite Hybrid is 14 inches tall and is constructed with four distinct interior layers. The top layer features copper-infused memory foam, designed to resist heat buildup.

The second layer consists of responsive polyfoam, which adds to the comfort while preventing excessive sinkage. Beneath that, a layer of individually wrapped metal coils offers targeted support and durability, with reinforced coils along the perimeter for enhanced edge support. The base layer is made of high-density polyfoam, which helps absorb vibrations and reduce noise.

Encasing the mattress is a quilted cover treated with phase change material to promote temperature neutrality. For an additional fee, you can upgrade to a Celliant fabric cover, which enhances temperature regulation and is designed to support muscle recovery.

Trial, Shipping, & Warranty

Bear offers free standard delivery throughout the contiguous U.S. Each order comes with two free pillows, but customers can also pay a small upcharge and receive a sleep accessories bundle that includes two pillows, a sheet set, and a mattress protector. The Elite Hybrid comes with a 120-night sleep trial, and those who keep their mattress also receive a lifetime warranty against structural defects.