Sealy has been making mattresses since 1881. While they started in classic brick-and-mortar stores, Sealy broke into the online space with the Cocoon mattress. Cocoon offers two models –– the Cocoon Chill memory foam mattress and the Cocoon hybrid mattress.
This Cocoon mattress review will focus on the Cocoon Chill bed. We’ll cover everything you need to know from the construction to the bed’s performance.
Our favorite parts of the Cocoon Chill mattress:
- The Cocoon Chill mattress is cool to the touch thanks to Sealy’s proprietary Phase Change Material. This means it’s a good option for hot sleepers.
- We think the Cocoon bed is a medium to medium-firm on our scale, which means that it’s a pretty versatile bed.
- Cocoon is a really affordable mattress. We compare the price to that of Casper or Leesa.
Cocoon Mattress Firmness And Feel
How firm is the Cocoon mattress?
Sealy used to offer Cocoon Chill bed in two firmness options. Now, they offer one firmness option which is equivalent to the old “softer” model. That said, it’s not the softest mattress around. We rate it around a medium to medium-firm on our Slumber Yard firmness scale, or around a 6.
Most sleepers like beds that fall within the medium to medium-firm range because they are pretty versatile. With this firmness level, you get a good amount of support and plenty of comfort.

What does the Cocoon bed feel like?
The Cocoon mattress has a typical memory foam feel. So when you lay down on it, the bed will mold to your body’s shape and sleeping position. However, we think that the Cocoon Chill bed feels denser than most memory foam beds. If we had to compare it to another bed, we’d say that Cocoon is kind of a budget version of a TempurPedic mattress.
Cocoon Chill Design And Construction
The flagship Cocoon Chill Mattress has a 10” height profile and is constructed with multiple layers of foam.

- Base Layer – The Cocoon Chill Mattress’s bottom layer is dense polyurethane foam. You’ll see this on nearly every foam mattress. The base layer is where the bed gets its firmness and support from.
- Middle Layer – Next, you get the transition layer right in the middle. As you’d expect, the middle layer helps soften up the mattress. You wouldn’t really like sleeping on the dense base layer.
- Comfort Layer – The top layer of the Cocoon bed is what the brand calls “Perfect Fit Memory Foam.” This layer will serve as the primary comfort layer and it will adapt to your body size, shape
,and sleep position. - Cooling Mattress Cover – The Cocoon Chill’s mattress cover is infused with Sealy’s proprietary Phase Change Material (PCM) that absorbs and disperses body heat. The Cocoon Chill mattress is actually cool to the touch. Many mattress companies claim to use cooling technologies that will prevent the bed from sleeping warm, but we haven’t found them to always be effective. However, the Phase Change Material on Cocoon Chill helps provide a fairly cool sleeping surface.

While the Cocoon Chill mattress cover is technically removable, it is not machine washable. To spot clean, gently dab at it with a cloth that has been dampened with water and mild detergent. Gently scrub the spill until the spot has cleared and let the mattress air dry.