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Casper Mattress Review: Test Lab Ratings
Our team appreciated the balanced support and pressure relief of the Casper One Mattress, which combines a three-layer foam construction with a medium-firm feel. As the evolution of one of the first bed-in-a-box designs, this bed impressed us with its breathable build and excellent value for sleepers of all styles.
- Solidly supports those who weigh less than 230 pounds, especially side and back sleepers
- Isolates motion very well
- Excels at relieving pressure
- Limited edge support
- Feels too soft to most back and stomach sleepers over 230 pounds
Founded in 2014, Casper is one of the pioneers of the online mattress industry. In 2024, Casper introduced a revamped mattress lineup, including the Casper One. With three layers of foam and a medium firm (6) feel, the Casper One is designed to relieve pressure and support sleepers without feeling too soft. It is one of Casper’s most affordable mattresses, making it attractive to budget shoppers.
Introduced in 2025, the Casper Cloud One builds on the One’s design with adaptive foam layers and a support core consisting of dense foam columns. These columns are meant to mimic the support of steel coils, but without the strong bounce and responsiveness to movement that can occur on innersprings and hybrids. The Cloud One is medium soft (4)
We took an in-depth look at the Casper One and Cloud One to help you determine if one of these is the mattress for you. We’ll go over what our team found during our in-house testing and describe the Casper One’s and Cloud One’s materials, performance, and pricing.
SMART MATCHING
Is the Casper One Right for You?
Use the filters below to see how well the Casper One lines up with your unique needs. We'll also give you a couple other recommendations based on your answers.
TEST LAB RATINGS
How the Casper One Scored
Motion Isolation8.0/10
The Casper One’s all-foam construction allows it to excel at isolating motion. The two-layer comfort system absorbs movement rather than transferring it across the surface of the bed.
This strong motion isolation can reduce nighttime disturbances when your partner is tossing and turning, which is important for people who share a bed and wake up easily.
The Casper Cloud One earned even high ratings for motion isolation due to its plusher, more adaptive feel. None of our testers noticed bothersome motion transfer on this mattress.
Jeremy Klein, Product Testing Manager: The Casper One and Cloud One are solid choices for couples. They absorb motion so well that you barely notice when there’s movement on the other side of the bed.
Pressure Relief8.0/10
The Casper One lightly embraces the body instead of giving you a deep hug. As a result, the mattress softens impact around the joints without causing you to sink down into its foams.
This balanced pressure relief is best for sleepers under 230 pounds, especially those who sleep on their side or back.
In contrast, the Casper Cloud One conforms closely to hug the body and cradle sensitive areas around the spine. Sleepers under 130 pounds should receive adequate pressure relief from this mattress, but those who weigh more should consider a firmer and more supportive bed.
Brad Nehring, Product Testing Manager: The Casper One and Cloud One demonstrated that a mattress doesn’t need deep contouring to relieve pressure. Their foam layers worked together to cushion my joints and support good sleep posture.
Temperature Control7.0/10
The Casper One has slightly above-average temperature control. Although some warmth can build up in its top layers, it traps less heat than many all-foam mattresses.
The open-cell foam is intended to let air flow through for ventilation. In addition, because the Casper One doesn’t hug your body too tightly, your skin can breathe. While not the perfect match for hot sleepers, the Casper One should stay cool enough for the majority of people.
The Cloud One received slightly higher marks for temperature control than the One. We’ve attributed this uptick in performance to steady airflow through the support layer of foam columns.
Logan Foley, Executive Product Director: I didn’t overheat on the Casper One, but it wasn’t exactly ice-cold, either. I think most sleepers will find that it has enough temperature regulation to keep them comfortable.
Edge Support6.5/10
Edge support isn’t a major strength or weakness of the Casper One. Instead, it’s around average. Like most foam mattresses, there’s greater compression near the edge, but our testers generally said it didn’t make them feel unstable or like they were going to accidentally roll off the bed.
We noted similar results for the Casper Cloud One in terms of edge support. The perimeter isn’t particularly strong, but it didn’t compress too deeply either.
Brad Nehring, Product Testing Manager: Edge support on this mattress is pretty much what you find with most all-foam beds. It sinks more around the perimeter, which is mostly an issue if you weigh over 230 pounds or spend a lot of time sitting on the edge of your bed.
Ease of Movement6.5/10
The Casper One and Cloud One both earned slightly above average ratings for ease of movement. The mattresses are a bit more responsive than the average all-foam model, but it has considerably less bounce than a latex or hybrid model.
The polyfoam layers in the Casper One and Cloud One have a touch of bounce and pushback, which limits the risk of feeling stuck in the mattress. That said, people over 230 pounds will sink in deeper and may encounter more problems related to ease of movement.
Jeremy Klein, Product Testing Manager: Although the Casper One has a memory foam layer, the foam that’s at the top is a bit more responsive. For me, that meant there wasn’t huge resistance to moving on the mattress.
Durability7.0/10
The Casper One mattress is made with polyfoam, which is a step above memory foam in terms of durability. The medium-firm construction can also be longer-lasting than softer selections. But because there’s no coil layer as you’d get with a hybrid mattress, you shouldn’t expect too much longevity beyond the standard seven or so years of mattress life.
HANDS-ON TESTING
Testing Team Takeaways
To test the Casper One Mattress, we had three people on our testing team each take the bed home with them for one week. Here are their initial observations.
Brad Nehring
Product Testing Manager · Back sleeper · 215 lbs
Back sleeper · 215 lbs
The Casper One was borderline too soft for me as a back sleeper, but I ultimately found myself liking it more than I expected. It didn’t sink too much, and its foam comfort layers felt just right under my lower back. The Cloud One was much too soft for me.
Logan Foley
Executive Product Director · Side sleeper · 140 lbs
Side sleeper · 140 lbs
One of the things that stood out the most to me was how well the Casper One and Cloud One absorbed motion. I liked that I wasn’t bothered by movement on the other side of these beds. I also felt that the mattresses offered a good mix of pressure relief and pushback.
Jeremy Klein
Product Testing Manager · Back sleeper · 160 lbs
Back sleeper · 160 lbs
The Casper One doesn’t have as much contouring as prior models from Casper, which earned a thumbs-up from me. I could feel the foam minimize impact near my hips and shoulders, but I never felt like I was sinking into the mattress. However, I didn’t get enough support from the Cloud One.
Who it Fits
Fit by Sleep Position and Body Weight
Sizes, dimensions and weights
Side Sleepers
The Casper One is well-suited to side sleepers, especially those weighing under 230 pounds. Its combination of foam layers effectively cushions the hips and shoulders, without contouring excessively. This helps side sleepers feel comfortable and maintain spinal alignment.
In our testing, some side sleepers weighing over 230 pounds said that the Casper One was not quite firm enough to support their needs. They felt themselves sinking a bit too much into the top layers of foam.
The Cloud One also earned stellar ratings from side sleepers up to 230 pounds.
Back Sleepers
The Casper One is on the softer end of the firmness range that back sleepers tend to prefer. Back sleepers weighing under 130 pounds gave it the highest ratings in our tests.
When you’re back sleeping, it’s important for a mattress to be firm enough to keep your midsection in line with the rest of the body. In general, the heavier a person’s weight, the firmer the mattress needs to be to provide adequate support. That’s why the Casper One was seen as lacking firmness for a chunk of back sleepers who weigh 130 pounds or more.
Our team recorded similar results for the Casper Cloud One, with back sleepers under 130 pounds feeling comfortable while heavier back sleepers needed more support.
Stomach Sleepers
When it came to our stomach sleepers, only those under 130 pounds got strong comfort and support from the Casper One or Casper Cloud One during our tests. They appreciated the small degree of bounce and pushback from the top layer of foam.
For those weighing 130 pounds or more, the foams in these mattresses caused the abdomen to sink too far into the mattress, pulling the lower back out of alignment.
Construction
Inside the Casper One
Cover
Polyester
Comfort Layer
Polyfoam (open-cell) and memory foam
Support Core
High-density polyfoam
Other Casper Mattresses You Might Like
Casper Dream Mattress
8.9/108.9/10 · $1,045 – $2,230
Hybrid · Medium (5)
Casper Snow Mattress
8.9/108.9/10 · $1,395 – $2,790
Hybrid · Medium (5)
Casper Dream Max
8.8/108.8/10 · $2,075 – $4,150
Hybrid · Medium Soft (4)
Casper Snow Max
8.7/108.7/10 · $2,270 – $4,540
Hybrid · Medium Soft (4)
Trial, Warranty, and Delivery
100 Night
Sleep Trial (30-night minimum)
10 Year
Limited Warranty
Free
Shipping (contiguous U.S.)
$249
White Glove Delivery
Availability
The Casper One and Cloud One are available to shoppers in all 50 states. The mattresses are sold on the Casper website. Shoppers in Canada can buy Casper mattresses through the company’s Canadian website.
Casper also has their own brick-and-mortar showrooms across the United States and sells mattresses through select retail partners.
Shipping
Casper ships the Casper One and Cloud One for free to the 48 contiguous states. Additional fees apply to shipments to Alaska and Hawaii.
The mattress usually arrives within one to two weeks after an order is placed. It will be delivered to your doorstep after being rolled tightly, compressed, sealed in plastic, and placed in a box.
There is no assembly required. You just need to remove the packaging and allow the Casper One to decompress and reach its full size and shape.
Additional Services
Casper offers White Glove delivery services that include in-home installation and removal of an old mattress. You can check the pricing and availability of this service in your area when ordering online.
Sleep Trial
The Casper One and Cloud One each come with a 100-night sleep trial. There is a 30-night adjustment period, which means you must keep the mattress for 30 nights to see if you like it. After that, you can request a return, and Casper will pick up the mattress and give you a full refund.
Warranty
Casper provides a 10-year limited warranty for the Casper One and Cloud One. If your mattress is defective, Casper will repair or replace it under the terms of the warranty. Neither accidental damage nor wear and tear are covered by the warranty.
Logan is a Certified Sleep Science Coach with a deep understanding of what it means to struggle with sleep. Her years of experience researching and testing sleep products – including mattresses, natural sleep aids, and bedding – are critical to her role helping lead the editorial team. When she’s not testing mattresses or researching CBT-I, she enjoys spending time in the sunshine with her husband and her dogs Pepper and Winston.