Cocoon by Sealy Mattress Review

Editor’s Rating – 7.5/10

Sealy, which is one of the most well-known names in the mattress industry, has broken into the online, direct-to-consumer mattress market with its Cocoon by Sealy mattress. The mattress doesn’t have many bells and whistles and won’t wow customers with its specifications, but it offers a basic mattress at a reasonable price that is backed by a company with a considerable track record.

The Cocoon Classic mattress is available in two models, Firm and Soft, that have slightly different internal compositions. Both, however, use memory foam in the comfort layer with a base of support foam. Regardless of which firmness option that you select, the Cocoon Classic can provide contouring and comfort at a price tag that won’t break the bank. However, this mattress is not the best pick for customers who want the most robust materials or who want more specialized mattress features.

Cocoon by Sealy – Simple Design, Contouring Comfort

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Cocoon by Sealy Mattress Specs

Classic Mattress, Firm:

Cover Stretch-knit fabric
Top Layer Memory Foam 2″ 3
Base Layer Polyfoam 8″ 1.8

Classic Mattress, Soft:

Cover Stretch-knit fabric
Top Layer Memory Foam 2″ 3
Second Layer Memory Foam 2″ 2.2
Base Layer Polyfoam 6″ 1.8

How is the Cocoon Mattress Built? 


The specifications of the Cocoon Classic mattress are different depending on which firmness option that you select.

The Firm mattress has two layers covered by a stretch-knit cover. These layers include:

  • Top layer: 2″ of memory foam with density of 3 PCF
  • Bottom layer: 8″ of support foam with density of 1.8 PCF

The Soft mattress has three layers covered by a stretch-knit cover. These layers include:

  • Top layer: 2″ of memory foam with density of 3 PCF
  • Middle layer: 2″ of memory foam with density of 2.2 PCF
  • Bottom layer: 6″ of support foam with density of 1.8 PCF

As you can see, the design of this mattress is simple and straightforward. Memory foam is used in the comfort layer to offer contouring, although the density and thickness of this foam is lower than we would normally like to see. Density, measured in pounds per cubic foot (PCF), tends to correlate with durability, and we usually want to see a density of at least 3.5 PCF in a topmost comfort layer. In addition, we generally prefer the comfort layer to be at least 3″ thick in order to provide more support for major pressure points in the body.



Comfort and Firmness

When you purchase a Cocoon Classic mattress, you can select from either the Firm or the Soft mattress option. The Firm mattress falls as a 6-7 on the firmness scale, while the Soft is closer to a 4-5.

The Firm mattress uses memory foam, and as a result, will provide a contouring feel despite its firmness. The Soft mattress, though, will permit more sinking into the mattress and as a result will have an enhanced hug.

Cocoon Mattress Firmness


Memory foam, which is used in the comfort layer for both versions of the Cocoon Classic, has a reputation for solid support. This is because it can provide cushioning that is tailored to the particular parts of the body where it is needed the most. This happens based on how the material compresses, which can help to relieve pressure points and help spinal alignment.

The primary concern when it comes to support for the Cocoon Classic is that the memory foam layers are thin. In the Firm mattress, it is only 2″ thick. This may not be enough thickness to provide enough cushioning to people with significant pressure points. It may also not be enough for heavy sleepers (over 230 pounds) who benefit from a thicker comfort layer. While the Soft version has a second layer of memory foam, it is much lower density and may not do enough to further bolster the topmost layer.

Sizing and Pricing

Mattress Sizes Price
Twin $399
Twin XL $449
Full $649
Queen $799
King $999
California King $999

Firmness, Trial, Warranty

Firmness Sleep Trial Warranty
Soft (4-5) or Firm (6-7) 100 nights 10 years

Cocoon by Sealy Mattress Ratings

  • Materials and Quality 75%
  • Support and Comfort 80%
  • Cooling 80%
  • Edge Support 70%
  • Trial/Warranty 85%
  • Value 75%

Edge Support

Edge support can be a real problem with memory foam mattresses because the foam may give in more at the edge, which can make it feel like you may fall out of the bed when lying or sitting on the edge. Neither the Firm nor Soft models have any type of reinforced edge support system. Given the larger amount of give in the Soft model, the lack of edge support can be even more noticeable.

How does it handle motion? Is it responsive? 

Because of the way that memory foam only compresses at the point where pressure is actually applied, it is very effective at motion isolation. This makes it a good material for people who share a bed and are prone to disruption from the movement of a partner.

This same characteristic about the compression of memory foam also makes it responsive, which is why it is employed in so many mattresses, including the Cocoon Classic. Customers can expect the foam to contour to the body, but as discussed in the Support section, it may not be robust enough to effectively respond to all body types or people in all sleeping positions.

Does it regulate temperature? Does it sleep hot?


Memory foam struggles when it comes to temperature regulation. This is for three main reasons. First, because of its close contouring to the body, especially in plusher beds like the Soft Cocoon Classic, there is a lack of airflow around the body that can reduce body temperature. Second, the foam itself tends to retain heat rather than dissipate it, so the mattress will heat up through the night. Third, when memory foam heats up, it compresses more, which ends up amplifying the contouring effect and subsequent reduction in airflow. As a result, people who have known issues with sleeping hot may have problems on the Cocoon Classic mattresses, especially the Soft model.


Cocoon Mattress

Is there a smell?

When you take the Cocoon Classic out of the box and first set it up, it is normal to notice some smell. This is sometimes described as a “new mattress smell.” But the good news is that it is not a threat to your health, and in a well-ventilated room, the smell should go away within a few hours.

How durable is it?

While we do expect this mattress to last for several years, it is not nearly as durable as many other foam models on the market. This stems from the design of the comfort layer. Because it is thin and because the memory foam is of below-average density, regular use will take a greater toll on this mattress. This is especially true for people with more extreme pressure points or who are heavier and may put more pressure on the mattress.

What Do Cocoon Customers Think?

Zenhaven Mattress

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Purple Mattress

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Helix Mattress

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Classic Soft – Mattress

Love it

“I really like my new bed. I have hip and lower back problems, and I’m a side sleeper. My old mattress was terrible. I am much more comfortable on my new bed. It has the right amount of give for my hip to be comfortable. It’s great! My dogs like it too.”

Nice Firm Memory Foam

“We tried several memory foam mattresses. Most were uber soft. We wanted a firm mattress that supported our bodies. Cocoon by Sealy finally fit the bill. Love it!”

– Cocoon by Sealy


Should have bought sooner!!!

“What do I like about your mattress, it would be better to say what is there not to like. From the first night it was the best sleep I had in years. Words don’t explain, just try and you will know.”

Fantastic Mattress

“I am the type of person that never leaves a review. This mattress is absolutely fantastic! My sleep has been never been better and I’ve only had the bed for 2 1/2 weeks. I wasn’t sure what to expect from a bed in a box but I can say that I’m more than pleasantly surprised.”

– Cocoon by Sealy

Who is the Cocoon mattress best suited for?

The Cocoon mattress is best suited for people who generally place less strain on their mattress. For example, lighter sleepers (who are 150 pounds or less) as well as people who sleep on their back or stomach. The thinner comfort layer is less likely to pose an issue for these sleepers, and they will also benefit from the contouring of the memory foam.

Cocoon by Sealy Mattress Review – Conclusion

The Cocoon by Sealy Classic mattress is about as simple as it comes for foam mattress design. This simple arrangement of layers provides a reliable if unremarkable performance from this mattress. It can be expected to provide the right amount of support for some sleepers, but it’s thinner and less-dense comfort layers may pose challenges for other sleepers. Customers who want a reasonably-priced and uncomplicated memory foam mattress and who want to buy from a company with decades of experience in the mattress are likely to be drawn to the Cocoon Classic from Sealy.

Ready to improve your sleep?

Buy the Cocoon by Sealy Mattress Today!