Casper One vs. Tempur-Pedic TEMPUR-Adapt

Overall Rating

8.2

Casper One

Bottom Line

One of the most iconic bed-in-a-box mattresses, the Casper is an affordable all-foam bed with a medium-firm feel.

Check Price on Casper.com

Click for the best Casper mattress deals

Full Mattress Review

VS

Overall Rating

8.0

Tempur-Pedic TEMPUR-Adapt

Bottom Line

This memory foam bed has an incredibly dense, close-conforming surface, providing a close hug that relieves tons of pressure.

Check Price on Tempurpedic.com

$2,199 from Tempur-Pedic (queen)

Full Mattress Review

Casper and Tempur-Pedic are both American mattress brands well-known for their all-foam beds. In 1992, a company that created foams for NASA founded Tempur-Pedic. Casper began in 2014 and has since been purchased by the international foam company Carpenter Co. Both companies still have headquarters in the U.S. Tempur-Pedic manufactures their beds in the states, while Casper mattresses are manufactured outside the U.S..

As all-foam mattresses with similar constructions, the Casper One and the Tempur-Pedic TEMPUR-Adapt tend to appeal to the same types of people. Discerning their differences can be difficult, which is why our testing team put both beds through a variety of tests. We also compared policies associated with both beds and customer reviews found online to help you determine which one you might prefer.

Our Testing Team’s Take

Over the last decade, our testing team has evaluated nearly 2,000 mattresses in our Seattle Test Lab. Through this hands-on testing, we’ve developed a unique product research methodology that forms the backbone of our mattress rating system. 

Using cutting-edge technology, we pressure map each bed to identify where pressure points may form. We use similarly advanced tools to measure motion transfer across each mattress’ surface and heat retention.

We also have testing team members take mattresses home for weeks at a time, allowing them to mimic real-world use. Because our team members represent a variety of body weights and sleep position preferences, their perspectives can help you identify which might be the best mattress for you.

Our Verdict  

Like many all-foam mattresses, both the Casper One and Tempur-Pedic TEMPUR-Adapt receive their highest ratings in motion isolation and pressure relief.

Logan Foley

Editorial Director

Side

140 pounds

Has too many dogs in the bed

“One of the things that stood out the most to me was how well the Casper One absorbed motion. I liked that I wasn’t bothered by movement on the other side of the bed. I also felt that the mattress had a good mix of pressure relief and pushback.”

Both of these beds closely conform to the body, providing a deep “hugging” sensation thanks to their memory foam layers. This foam also absorbs motion, so when one sleeper rolls over or gets in or out of bed, they likely won’t disturb their bed partner. Close-conforming foam excels at relieving pressure, which tends to be most important to side sleepers and people who experience chronic pain.

The biggest differences between the mattresses are their firmness levels and temperature regulation. The Casper One is slightly firmer than the TEMPUR-Adapt, which means stomach sleepers weighing less than 130 can feel supported on the bed, while stomach sleepers of all body weights tend to find the TEMPUR-Adapt unsupportive.

All-foam beds often retain heat, but the Casper One scored slightly above-average on its ability to regulate temperature, as the result of an open-cell polyfoam comfort layer.

Colin Simpson

Product Research Manager

Side

190 pounds

Talks in sleep (like, a lot)

“The feel of this mattress can be polarizing because of how it hugs the body. While the support was solid for me, my main issue was temperature. I felt warmer than usual on this mattress, and that could be a real problem for anyone who naturally runs hot.”

Construction and Materials

Both the Casper One and Tempur-Pedic TEMPUR-Adapt are all-foam mattresses with a memory foam transitional layer and polyfoam support core. But the Casper One has an open-cell polyfoam comfort layer, while the TEMPUR-Adapt has a memory foam comfort layer.

Casper One Breakdown 

The Casper One mattress is an all-foam model with a medium-firm firmness level, which rates 6 out of 10 on our firmness scale. Its 11-inch profile provides space for four layers, including the cover. The cover is made from a blend of polyester, polyethylene, and Lycra, and the company says it was designed to feel especially soft.

The Casper One’s comfort layer is made of open-cell polyfoam. This type of foam contains many tiny bubbles or cells within it that allow heat to disperse instead of build up. In addition to helping keep sleepers cool, this layer adds cushion and conforms to the body to relieve pressure. Beneath it is a memory foam layer, which also adds cushion and conforms to the body, while keeping sleepers from sinking all the way down to the support core.

The Casper One’s support core is made of polyfoam. This layer of polyfoam is a higher density than the upper layer, and its purpose is to stabilize the mattress and contribute to its firmness. Unlike the Tempur-Pedic TEMPUR-Adapt, foams in the Casper One have not received CertiPUR-US certification.

Tempur-Pedic TEMPUR-Adapt Breakdown 

Like the Casper One, the Tempur-Pedic TEMPUR-Adapt is an all-foam mattress with an 11-inch profile. Its firmness rates medium, or 5 out of 10 on our scale. Also like the Casper One, the TEMPUR-Adapt includes four layers, including the cover. While the brand doesn’t publicly share what the cover is made of, they note that it’s designed to feel cool.

Beneath the cover sits a layer of TEMPUR-Material^TM measuring about 1.6 inches thick. TEMPUR-Material^TM is the Tempur-Pedic brand’s proprietary memory foam, which was originally made in partnership with NASA to be used by astronauts. This comfort layer feels soft and contouring, and sleepers can expect it to quickly mold to their bodies.

Underneath the comfort layer is another 1.6-inch layer of TEMPUR-Material^TM memory foam that is likely firmer than the layer above it. This layer both adds to the comfort the bed provides while supporting sleepers. The bottom layer of the bed is a polyfoam support core, which makes the bed stable and durable. All foams in the bed are CertiPUR-US certified, which means they are free from mercury, lead, other heavy metals, formaldehyde, ozone depleters, and potentially harmful fire retardant chemicals.

Mattress Sizing and Weight 

With 11-inch profiles, both the Casper One and Tempur-Pedic TEMPUR-Adapt can fit standard fitted sheets. Both beds are of comparable weights in the 70-pound range, and people may want to ask for help before lifting or carrying either bed.

Performance Ratings 

The Casper One and Tempur-Pedic TEMPUR-Adapt rate highly on many of the same factors. Both excel at relieving pressure and appeal to sleepers who like a very conforming bed that hugs the body. Both excel at absorbing motion, making them good choices for couples who share a bed. However, like many all-foam beds, these two don’t have the sturdiest edge support, and movement on their surfaces may be impeded by the conforming foam.

The Casper One stands out in terms of temperature control. Many all-foam beds retain heat, and the Tempur-Pedic TEMPUR-Adapt is no exception. But the Casper One earns above-average ratings when it comes to eliminating heat build-up, largely due to its open-cell polyfoam layer. People who sleep very hot may want to avoid all-foam beds altogether, but those who are intent on an all-foam mattress will likely sleep cooler on the Casper One.

With similar firmness levels, these beds overlap in terms of who they perform best for, but there are also differences. Both beds perform well for side sleepers of all body weights and back sleepers weighing less than 130 pounds. Additionally, the Casper One works well for back sleepers weighing between 130 and 230 pounds and stomach sleepers weighing less than 130 pounds.

Full Reviews: Other Casper and Tempur-Pedic Models

Casper Dream Hybrid

Overall Rating:

6.7 /10

Price Range:

$1,195 – $2,390

Mattress Type:

Hybrid

Firmness Options:

Medium (5)

Casper Dream Max

Overall Rating:

6.9 /10

Price Range:

$2,495 – $4,990

Mattress Type:

Hybrid

Firmness Options:

Medium (5)

Casper Snow Hybrid

Overall Rating:

8.4 /10

Price Range:

$1,310 – $2,620

Mattress Type:

Hybrid

Firmness Options:

Medium (5)

Tempur-Pedic TEMPUR-breeze

Overall Rating:

8.4 /10

Price Range:

$3,949 – $7,898

Mattress Type:

Hybrid

Firmness Options:

Soft (3), Medium (5), Firm (7)

Tempur-Pedic TEMPUR-Cloud

Overall Rating:

7.7 /10

Price Range:

$1,699 – $3,398

Mattress Type:

Foam

Firmness Options:

Medium (5)

Tempur-Pedic TEMPUR-ProAdapt

Overall Rating:

8.2 /10

Price Range:

$2,699 – $5,398

Mattress Type:

Foam

Firmness Options:

Soft (3), Medium (5), Firm (7)

Mattress Pricing 

The Tempur-Pedic TEMPUR-Adapt mattress costs more than double the amount of the Casper One. But Tempur-Pedic offers free White Glove Delivery and mattress removal, which can help account for the TEMPUR-Adapt’s higher cost.

What Customers Are Saying

In online reviews, customers generally say positive things about both the Casper One and the Tempur-Pedic TEMPUR-Adapt. Both beds are often complimented for their deep contouring and comfort. Many reviewers say their sleep has improved since purchasing either bed. Reviewers also often comment that the beds relieve pressure, ease pain, and are worth their cost.

Negative reviews of both beds often come from stomach sleepers or people who weigh over 230 pounds. These reviewers complain that these beds are too soft and lack adequate support. Some even say that the beds cause back pain. These reviews are a reminder to keep in mind your body weight and sleep position preference when purchasing a bed. In some cases, reviewers note that the bed sleeps hot, though this comment is more common with the TEMPUR-Adapt than with the Casper One.

Still have questions? Ask our community!

Join our Sleep Care Community — a trusted hub of product specialists, sleep health professionals, and people just like you. Whether you’re searching for the perfect mattress or need expert sleep advice, we’ve got you covered. Get personalized guidance from the experts who know sleep best.