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The Cocoon mattress is a high-quality foam mattress infused with cooling phase change material so that sleepers who prefer the feel of memory foam don’t have to worry about overheating.

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Cooling mattress technology
Customizable firmness level
Superior-quality memory foam
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Cocoon Mattress Review


Cocoon is the online mattress brand from the trusted mattress company, Sealy. For over 130 years, Sealy has been manufacturing top-quality mattresses. Using their extensive testing and manufacturing resources and years of research and development, Sealy developed Cocoon to meet the highest standards for bed-in-a-box mattresses.

Cocoon’s signature mattress is the Chill mattress, a memory foam mattress infused with proprietary phase change material to eliminate the risk of overheating and keep the sleep surface cool throughout the night.

The Cocoon Chill mattress is available in two firmness levels to accommodate the different needs and preferences of sleepers. The Cocoon Medium-Soft provides an “in-the-bed” sensation, while the Cocoon Extra-Firm provides an “on-the-bed” feel.

Cocoon mattresses are designed and manufactured in the United States, and ship throughout the country for free.

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The Cocoon Chill mattress is available in two varieties: medium-soft and extra firm. Both types feature a three-layer all-foam construction but vary slightly depending on the firmness level. All the foams used in Cocoon mattresses are CertiPUR-US certified.

  • Perfect fit memory foam top layer – High-quality memory foam, also called viscoelastic foam, responds to your body’s heat and weight to offer cradling-comfort and conforming support.
  • Personalized comfort layer – Customers can choose between medium-soft and extra-firm comfort according to their sleep needs and preferences. Extra-firm mattresses feature a comfort layer of denser foam.
  • Support Foam – The thickest layer of the Cocoon Chill mattress is the support base foam layer. Medium-soft mattresses come with a flexible essential support foam layer. In contrast, the extra firm mattress comes with a reinforced essential support layer.

The medium-soft mattress is the most popular selection. It ranks about a 5/10 on the firmness scale, while the extra-firm mattress ranks about an 8.5/10 on the firmness scale.

Stomach and back sleepers, as well as those who do not like the sinking sensation of memory foam, will benefit most from extra-firm support. Meanwhile, side sleepers, combination sleepers, and those who enjoy the body-hugging feel of sinking into memory foam may prefer medium-soft comfort.

The medium-soft mattress has better motion isolation than the extra firm mattress, so it may be a better choice for partners sharing a bed.


The star of the Cocoon Chill mattress is the heat-dissipating mattress cover. This stretch-knit cover is infused with proprietary phase change material, which virtually eliminates heat on contact to prevent heat-trapping, which is a common complaint about memory foam.

Thanks to the Chill cover from Cocoon, sleepers who prefer the body-hugging comfort of memory foam can enjoy it without the risk of overheating. The knit texture gives it an extra luxurious and cushioning feel.

The mattress cover cannot be removed and should be spot-cleaned only. It is recommended to use a mattress protector to prevent serious damage to your mattress.


Cocoon mattresses come with a 100-night at-home trial period, free shipping, and a 10-year warranty. All mattresses returned during the trial period are fully refunded, collected for free, and donated to a local charity.

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This review is for informational purposes only. The content provided should not be relied upon as a professional advice. The offers might be subject to additional terms determined by the service provider, and might be updated.


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