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35% off at Cocoon
Price Range: $399 – $899
Mattress Type: Foam
Firmness Options: Medium Firm (6)
At a Glance
The Cocoon Chill is an all-foam mattress engineered for extra cooling and temperature control. Our tests also show this bed provides excellent pressure relief and isolates movement exceptionally well.
Ratings Summary
Motion Isolation
8/10
Edge Support
6/10
Temperature Control
6/10
Ease of Movement
6/10
Off Gassing
6/10
Pressure Relief
7/10
Pros
Cons
The Cocoon Chill is made by Sealy, a company that has been designing and manufacturing mattresses since 1881. Their flagship offering, the Cocoon Chill is an all-foam mattress (Sealy also makes this model in a hybrid) featuring a comfort layer of contouring memory foam. The mattress is 10 inches tall and has a firmness level of medium firm (6).
With an accessible price-point, the Cocoon Chill is an intriguing option for shoppers who want a memory foam mattress that won’t break the bank. But can a lower-cost mattress can deliver solid performance?
We had our expert testing team put the Cocoon Chill through the paces to find out. To identify its strengths and weaknesses, we review its performance across key categories and dig into information about its pricing, sizing, materials, and return policy.
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To test the Cocoon Chill Mattress, we had three people on our testing team each take the bed home with them for one week. Here are their initial observations.
Mary Fenton
Head of Product Content
Combo sleeper
150 lbs.
Sleeps with a noise machine
I switch between side, back, and stomach sleeping. While the Cocoon Chill was supportive when on my side, it was softer than I’d like when sleeping on my back or stomach.
Brad Nehring
Senior Product Analyst
Side sleeper
215 lbs.
Sleeps with a weighted blanket
The Cocoon Chill did a good job at cushioning my shoulders and hips, but I felt like it didn’t live up to the “chill” name. I felt hotter as the night went on and didn’t think there was much heat dissipation.
Daniel Noyed
Senior Product Editor
Back sleeper
165 lbs.
Dunks head in ice water to wake up
Like Mary, I felt the firmness was a bit lacking when back sleeping. But I do want to highlight one positive, which is that the foam was excellent at containing vibrations so that you don’t feel it when there’s movement on the other side of the bed.
Watch the video below to see how the Cocoon Chill Mattress performed when put to the test in our lab.
Cocoon Chill
Sleeper Type
Among all sleepers, the highest ratings for the Cocoon Chill came from side sleepers who weigh less than 230 pounds. For them, the mattress provided essential contouring around the shoulders and hips. At the same time, the medium firm (6) feel kept them from sinking far down into the foams.
The mattress didn’t get the same reviews from side sleepers over 230 pounds. They experienced excessive sinkage that decreased comfort and support.
During our testing, back sleepers under 230 pounds found the Cocoon Chill to provide sufficient but not outstanding support. The mattress was mostly effective at keeping their entire body in a neutral position, but most people said that a firmer mattress with less contouring would have been better.
Back sleepers over 230 pounds gave lower ratings to the Cocoon Chill. They found their body being pulled into a U-shape because the mattress wasn’t able to keep their midsection from sinking into the foam.
With its mid-range firmness and significant contouring, the Cocoon Chill is not a good match for most stomach sleepers. During our tests, these sleepers felt that there was a lack of firmness in the center of the mattress, which caused pressure to build up in the lower back as their abdomen sank into the top layers of foam.
In addition to the hands-on feedback from our team, we conduct a number of quantitative tests in our Test Lab. The below ratings are based on the experience of our testers.
“One of the clearest strengths of the Cocoon Chill is motion isolation. Movement causes almost no ripple effect across the mattress.” – Mary
Our testing team praised the motion isolation of the Cocoon Chill Mattress. The memory foam top layer absorbs vibrations, which eliminates a major source of sleep disruptions for couples.
You can confidently rely on this mattress to contain the vast majority of motion that comes from the other side of the bed.
“The contouring of this mattress is a bit of a double-edged sword for pressure relief. I liked how it cradled my hips and shoulders, but for a lot of other sleepers, there’s too much sinkage to deliver even pressure relief.” – Brad
Across all our test team members, we found that the Cocoon Chill provided an average level of pressure relief. It was best for side sleepers under 230 pounds who appreciated the close conforming around heavier areas of the body.
On the other hand, back and stomach sleepers generally felt that the contouring was too deep, especially around the midsection.
“I’ve slept on memory foam mattresses that are hotter than the Cocoon Chill, but I was hoping this mattress would better resist heat buildup. I don’t think I would recommend it for really hot sleepers.” – Danny
The Cocoon Chill Mattress’ cover is made with phase change material intended to maintain a neutral temperature. But we found that the cover couldn’t completely counteract the memory foam’s heat absorption.
Sleepers over 230 pounds experienced the most heat buildup. They were more closely hugged by the foam, making it easier for heat to get trapped around the body.
“I felt that the edge support was lacking, especially when I sat on the edge of the bed to tie my shoes. The lack of edge support is much more likely to be a problem for heavier people than for those with a lighter body weight.” – Brad
A weaker perimeter is a common issue in all-foam mattresses, and the Cocoon Chill doesn’t buck the trend. We found that the foam compressed substantially anytime we sat on the edge of the bed. The compression was a bit less when lying down near the perimeter.
Overall, the mattress’ edge doesn’t feel totally unstable, but people who want a robust feel from edge to edge may prefer a hybrid or latex mattress.
Nolah Signature 12
Overall Rating:
8.1 /10
Price Range:
$844 – $1,819
Mattress Type:
Foam
Firmness Options:
Medium (5)
Overall Rating:
/10
Price Range:
$0 – $0
Mattress Type:
Firmness Options:
Nectar Classic
Overall Rating:
8.3 /10
Price Range:
$349 – $1,098
Mattress Type:
Foam
Firmness Options:
Medium Firm (6)
The Cocoon Chill is an all-foam mattress that is medium firm, or a 6 on the firmness scale of 1 to 10. It is 10 inches tall and has three internal layers.
The top layer is made of memory foam that powers much of the performance of the mattress. Memory foam closely conforms to the body, letting heavier areas sink in more deeply.
Beneath the memory foam is a layer of polyfoam that has more pushback and helps create a transition to the bottom layer, which is made of a high-density base polyfoam. This material fortifies the mattress and improves its durability.
The cover is made of a stretchy fabric that has phase change material in it. This kind of material is engineered to draw in heat when it’s too cold and dissipate heat when it’s too hot.
|
Firmness |
Medium Firm (6) |
|---|---|
|
Mattress Type |
Foam |
|
Construction |
Cover Material:Stretch-knit fabric with phase change material Comfort Layer:
Memory foam
Support Core:Polyfoam |
The Cocoon Chill mattress is sold in the six standard sizes. Other options such as split queen or split king are not available.
The Cocoon Chill is exclusively sold on the website of the Cocoon by Sealy brand. It can only be shipped to addresses in the contiguous United States.
Shipping is free. After you place an order, the Cocoon Chill is typically delivered within 10 business days.
When it arrives, the mattress will be left at your doorstep inside a cardboard box. When you take the Cocoon Chill out of the box and cut away the plastic packaging, the mattress will quickly grow to its full size.
For larger mattress sizes, it may take two people to move the box and position the mattress on your bed base.
Cocoon by Sealy only offers White Glove delivery to customers purchasing the Ease power base. White Glove delivery isn’t available for mattress purchases.
Sealy offers 100 nights to try the Cocoon Chill as part of a risk-free sleep trial. The company requires you to keep the mattress for 30 nights as a try-out period. After that, you can request a return to get a full refund. Sealy handles mattress pickup for all returns.
The Cocoon Chill has a 10-year limited warranty. If you find that the mattress has a defect, Sealy will repair or replace it. You may be required to pay for any shipping costs associated with the warranty service.
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Lauren is a Certified Sleep Science Coach with extensive experience researching and testing a wide variety of sleep products.