updated August 2022

Cocoon vs Casper Mattress Comparison
The Cocoon and Casper mattresses are similar on paper, but does that translate into real-life performance? That’s what we’ll reveal in this comparison.
Cocoon and Casper are both trusted bed-in-a-box mattress brands with popular memory foam mattresses. If you’re looking for a new mattress, the Cocoon Chill and Casper are affordable options with excellent performance and functionality scores.
So how do you choose? That’s the topic of this comparison. The Cocoon Chill and Casper Original mattresses have some key differences that will likely help you take the plunge on one or the other. Specifically, we’ll talk about our review scores, pricing, construction, and performance.
Cocoon vs Casper Breakdown
Customer Rating
MA Score
Summary
Firmness
Type
Trial Period
Warranty
Customer Rating
MA Score
8.7/10
Summary
Cooling memory foam mattress by Sealy
Firmness
Medium-firm: 6/10
Type
Memory foam
Trial Period
100 days
Warranty
10-year limited warranty
Customer Rating
MA Score
8.7/10
Summary
Universal firmness mattress for the average sleeper
Firmness
Medium-firm: 6/10
Type
Memory foam
Trial Period
100 days
Warranty
10-year limited warranty


Cocoon
Casper
Customer Rating
MA Score
8.7/10
8.7/10
Summary
Cooling memory foam mattress by Sealy
Universal firmness mattress for the average sleeper
Firmness
Medium-firm: 6/10
Medium-firm: 6/10
Type
Memory foam
Memory foam
Trial Period
100 days
100 days
Warranty
10-year limited warranty
10-year limited warranty
Key Similarities
- All-Foam Mattresses: Both of these beds are constructed from memory foam and polyfoam.
- Warranty: The Cocoon Chill and Casper Original mattresses are each covered by an industry-standard 10-year warranty.
- Trial Period: With either mattress, you get a 100-day sleep trial to get the feel of the mattress in the comfort of your home.
- Firmness Levels: The Casper and Cocoon Chill mattresses have a medium-firm feel, which is around 6/10 on the firmness scale.
Key Differences
- Pricing: For all but queen size, the Casper will cost you about $100 more.
- Support Features: The Cocoon Chill has a “Perfect Fit” comfort layer that adapts to your body type. The Casper features a zoned support layer with three targeted ergonomic regions.
- Cooling Technology: Casper keeps you cool with breathable open-cell foam, while the Cocoon Chill has a cool-to-touch cover.
- Thickness: The Casper mattress is 11” thick, while the Cocoon Chill is 10” thick. This won’t make a big difference to the average sleeper, but it’s important when you’re buying sheets or measuring your sleep space.

Cocoon Chill Mattress Review Highlights
- The Cocoon Chill is Sealy’s bed-in-a-box mattress model. We chose it as one of our best cooling mattresses for hot sleepers.
- The Cocoon Chill earned top marks for motion isolation, making it a great choice for couples who are concerned about motion disturbances during the night.
- Hot sleepers will love the phase change material in the mattress cover. The cover responds to your body temperature by either absorbing or releasing body heat, so you stay temperature neutral throughout the night.
- Take a look at our Cocoon Chill Hybrid mattress review for a look at the company’s different mattresses.

Casper Mattress Review Highlights
- We consider the Casper mattress to be one of the best mattresses for side sleepers, thanks to its strong performance during our pressure relief and spinal alignment tests.
- The Casper earned a perfect 10/10 score during our responsiveness test. In other words, you won’t need to wait for the foam to adapt to your changes in position.
- The zoned support layer provides firmer or softer support right where you need it. The result is more even weight distribution and better contouring around your pressure points.
- If you’re interested in a high-quality Casper at a lower price point, read our Casper Element or Casper Select mattress reviews. Fans of innerspring should check out the Casper Hybrid, Casper Wave Hybrid, Casper Wave Hybrid Snow, or the Casper Nova Hybrid.
Casper Mattresses Offer a Bit More Surface Area
Take a look at how the Cocoon Chill and Casper mattresses differ by dimension. The Casper is slightly thicker, and the Cocoon Chill has extra precise sizing.
Cocoon Chill | Casper | |
Thickness | 10″ | 11″ |
Twin | 38″ x 74.5” | 38″ x 75″ |
Twin XL | 38″ x 79.5” | 38″ x 80″ |
Full | 53″ x 74.5” | 53″ x 75″ |
Queen | 60″ x 79.5” | 60″ x 80″ |
King | 76″ x 79.5” | 76″ x 80″ |
California King | 72″ x 83.5” | 72″ x 84″ |
Learn more about mattress sizes.
Cocoon Chill Tends To Be More Affordable
You can see how the Cocoon Chill and Casper mattresses are priced below. Generally, the Cocoon Chill is a bit less expensive.
Cocoon Chill | Casper | |
Twin | $769 | $895 |
Twin XL | $869 | $995 |
Full | $969 | $1,195 |
Queen | $1,239 | $1,295 |
King | $1,539 | $1,695 |
California King | $1,539 | $1,695 |
Compare the Memory Foam Constructions
Ever wish you could cut a mattress in half to see the layers? There’s no need—we’ll show you how each of these mattresses looks on the inside.

Inside the Cocoon Chill Mattress
The Cocoon Chill is constructed with three foam layers. All of the foams are made in the USA and CertiPUR-US certified for non-toxic materials and low emissions.
- Mattress Cover: A soft, breathable stretch-knit fabric encases the entire mattress. It’s infused with phase change materials that absorb excess heat.
- Top Layer: A layer of Perfect Fit memory foam conforms to your body and sleeping position.
- Transition Layer: A layer of polyfoam suspends your body, so you don’t sink too deep into the mattress.
- Support Layer: A foundational layer of support foam improves mattress durability.

Inside the Casper Mattress
The Casper mattress is made of three layers of foam that are CertiPUR-US certified and intentionally designed to provide breathability and pressure relief.
- Mattress Cover: A soft, breathable fabric cover wraps around the entire mattress.
- Top Layer: Airscape open-cell foam increases airflow and helps to move hot air away from the mattress.
- Support Layer: A memory foam comfort layer with three ergonomic zones provides more cushion under your shoulders and more support under your hips, waist, and lower back.
- Base Layer: A bottom layer of durable support foam prevents sinkage and supports your body weight.
Score Breakdowns
We put both of these mattresses under the magnifying glass during our in-depth review process. You’ll notice that the Cocoon Chill and Casper scored pretty similarly, but marginal differences can make a noticeable difference.
Cocoon Chill | Casper | |
Shipping | 8 | 8 |
Trial Period | 9 | 8 |
Return Policy | 10 | 8 |
Warranty | 9 | 8 |
Set-Up Test | 8 | 8 |
Motion Transfer Test | 9 | 8 |
Edge Support Test | 9 | 9.5 |
Pressure Relief Test | 8.5 | 8.5 |
Spinal Alignment Test | 9 | 9.5 |
Responsiveness Test | 9 | 10 |
Cooling Evaluation | 7.5 | 7 |
Durability Evaluation | 8 | 8 |
Customer Service Score | 9 | 9 |
Social Impact Score | 4 | 8.5 |
TOTAL SCORE | 8.7/10 | 8.7/10 |
Motion Transfer
Have you been woken from a deep sleep by a partner who gets out of bed in the wee morning hours? Then pay special attention to motion transfer. During our review process, we measure how well a mattress isolates motion on the mattress surface.
The Cocoon Chill and Casper each earned above-average scores, but the Cocoon Chill scored a whole point higher. If you’re an especially light sleeper, the Cocoon Chill will do a better job of minimizing sleep disturbances from sleeping partners, pets, or children.
Pressure Relief
No matter which sleeping position you favor, you need pressure point relief. Side sleepers need the most pressure relief for a good night’s sleep since they put a lot of weight on their shoulders and hips. Stomach sleepers also need to cushion their ribs and hips. Even back sleepers need a touch of softness between them and the base layers of an extra firm mattress.
The Cocoon Chill and Casper mattresses both received an 8.5/10 for pressure relief. In this case, you’ll need to defer to other categories to make your decision. For example, side and stomach sleepers will want maximum spine alignment, while combo sleepers need a responsive bed.
Cooling
You would think that this would be a decisive category in our Cocoon Chill versus Casper mattress comparison, but again, the scores are within .5 points of each other. Predictably, the Cocoon Chill takes the cake in the cooling comparison. The phase change materials in the cover do a decent job of keeping you comfortably cool, even on hot summer nights.
Responsiveness
We measure responsiveness by asking our professional testers to repeatedly change positions on top of a mattress and then rate how easy it was to get comfortable. The Casper received a perfect 10/10 score for responsiveness, while the Cocoon Chill earned a near-perfect 9/10. These are both remarkably high scores for memory foam beds, which have a tendency to preserve body impressions long after the sleeper has moved on.
This category is the most relevant for combo sleepers, who switch from position to position during the night. The Casper does an amazing job of keeping up with your pace, so it’s just a little bit better for combo sleepers.
Verdict: Which Is the Best Mattress?
The Cocoon Chill and Casper mattresses earned similar performance scores, but Casper is slightly better for combo sleepers, side sleepers, and those who use the edge of the bed. Cocoon Chill is the better choice for hot sleepers and couples, and budget-friendly shoppers.
With such close scores, you may be tempted to think that there’s no way to decide which is the best mattress. On the contrary, one of these mattresses better suits your particular needs. We recommend factoring in the scores for your top two to three performance priorities, along with your budget. And don’t forget that you get a 100-day sleep trial and a 10-year warranty with whichever mattress you choose.
Other Casper Comparisons

Related Content

Mattress Guides
Casper Mattress Coupons
Casper mattresses are for everyone, and no one has to pay full price. Using our Mattress Advisor Casper mattress coupons, you can get up to $200 off of your order for the holiday season.

Mattress Guides
Casper Mattress Warranty
Want a little help understanding what your Casper mattress warranty covers and how to file a claim? We break down all the fine print in this step-by-step guide.

Mattress Reviews
Sealy Mattress Reviews
The Sealy mattress brand has been around for 130 years, making mattresses right here in the USA. Check out our Sealy mattress reviews and explore the Posturepedic comfort.