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  • Multiple firmness options
  • Cooling cover
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Cocoon Mattress Review

Updated June 2024
We receive referral fees from the brands listed below.
Michelle Griczika
Written by
Dr. Ifran Saddique
Medically reviewed by


cocoon mattress on bed
About Cocoon by Sealy:

The Sealy brand presents Cocoon by Sealy. Sealy designed and tested over 100 prototypes to develop a shippable mattress that measures up to Sealy's standards of quality and durability. All of their design, development and manufacturing is in-house. They offer two different types of mattresses which are available in soft and firm options, allowing customers to choose the level of support that's right for them.

  • In this Cocoon Mattress review we are focusing on the memory foam option

  • The mattress:
    The Cocoon Chill mattress is a 10-inch tall, all-foam mattress.
  • Construction:
    Its construction comprises 3 layers of foam, including memory foam and poly foam.
  • Cooling:
    This memory foam mattress is designed with hot sleepers in mind. Its cover is infused with a cooling technology that dissipates heat.
  • Shipping:
    As a bed-in-a-box style mattress, it’s shipped free of charge in an easily movable box.
  • Trial period:
    The manufacturer covers your purchase with a 100-night trial period and a 10-year warranty.


Quick Overview

The Cocoon Chill mattress is a 10-inch tall, all-foam mattress. As a bed-in-a-box style mattress, it’s shipped free of charge in an easily movable box. This memory foam mattress is designed with hot sleepers in mind.
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Trial 100-Night Trial
Warranty 10 Years
Shipping/Returns USA
Mattress Type Memory Foam
Firmness 7/10

Who is the Cocoon Chill mattress ideal for?

The Sealy mattress company is a leading mattress producer in the industry. Their Cocoon Chill line is one of their boxed mattresses that ship directly to your home. In this Cocoon Chill mattress review we are focusing on the all foam option. Due to its balanced construction, the Cocoon Chill memory foam mattress does a great balancing act of being supportive while relieving pressure. 

Ideal for: 

  • Sleepers who prefer a firm mattress

  • All weights for back and stomach sleepers

  • Side sleepers weighing more 150 lbs 

  • Hot sleepers

  • Shoppers looking for a budget mattress

Cocoon Mattress Firmness

All Cocoon Mattresses by Sealy are now offered in only one firmness which is considered a medium feel. They used to offer their mattresses in two options: a medium soft feel and an extra firm mattress but they found through Cocoon mattress reviews that most sleepers preferred a mattress that was fully supportive but not too firm. So now it only comes in a soft medium feel that falls around a 6.5/7 on the firmness scale of 1-10. 

Based on customer reviews, most would say that the Cocoon Chill Memory foam mattress is a bit firmer than a 6 and falls more around a 7 which is a bit firmer than the industry average. Based on this, we’d recommend this mattress for back and stomach sleepers and side sleepers weighing above 150 lbs.

Cocoon Mattress: 7 Firm
Soft iconSoft
Firm iconFirm

Cocoon Mattress Construction

Sealy has been in the mattress industry for 130 years. Their expertise, manufacturing, and mattress technology are unmatched. Their introduction of the Cocoon Chill mattress has extended their contributions to the market. The Cocoon mattress provides better sleep with a 10” bed made solely of memory foam. When designing the Cocoon Chill, it needed to provide superior support while offering comfort regardless of sleep position. 

The Cocoon Chill mattress layers consist of:

Layers Description
Cooling Cover A cool-to-touch cover absorbs & dissipates heat
Memory Foam Pressure relieving memory foam that promotes airflow and provides overall comfort
Responsive Comfort Layer A cushioning foam layer that reduces motion transfer
Essential Support Layers Six inches of highly durable memory foam engineered to contour to your body


layers of cocoon mattress
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When buying a mattress, you want to know that the features and quality are worth the price. In this section of our Cocoon mattress review we will breakdown all the key features that make a mattress “good”. We will take an in-depth look at the performance of things like motion transfer, edge support, cooling and more. Read below to see why we thought the Cocoon Chill deserves a place on our list of best mattresses.

cooling mattress icon

Cocoon Cooling mattress

It used to be that a memory foam mattress was not well known for being a “cooling” mattress but with today’s advancements in mattress cooling technologies, this is a thing of the past. In fact, the Cocoon Chill memory foam mattress has some of the best cooling features in the industry today. Sealy made a targeted effort at addressing this with its mattress cover that is made from a phase change material specifically designed to wick heat away from the body. Plus, the comfort layer made from memory foam doesn’t contour as much as other foams which allows more airflow between the surface of the mattress and your body. 

person on mattress icon

Cocoon Mattress for Back Pain

The Cocoon mattress is the perfect balance of pressure relief and firmness so it’s a great mattress for side sleepers, people with back, back and stomach sleepers. Memory foam in general does a good job of making sure to spread the weight evenly across the whole body. This is important for people who need support in sensitive areas. 

The Cocoon Chill’s layers include a comfort layer that hugs the body and offers pressure relief. The second and third layers are designed to support the natural curve of the spine which is why it's a great mattress for side sleepers. Keep in mind that overall the Cocoon Chill is a firmer mattress so it’s also supportive enough for stomach and back sleepers. 

feather on mattress icon

Motion Transfer

If you are looking for a mattress with good control on motion transfer then you’re doing the right thing by looking at a memory foam mattress. Typically an all foam mattress does a better job of absorbing movement because they don’t have the responsiveness of coils within its layers. With that in mind, the Cocoon Chill memory foam mattress reduces the movement and vibrations very well due to its foam construction which hugs your body’s movement. 


Low Motion Isolation
High Motion Isolation
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Cocoon Edge Support

If you are a couple or someone who has difficulty getting in and out of bed, then you’ll need a mattress with good edge support. This will all depend on the materials and construction used in the design of the mattress. 

Foam mattresses are not known for having a super durable perimeter. Sleepers who like the feel of a big bed with a durable perimeter should consider a hybrid or innerspring mattress.

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Cocoon Mattress & Sex

The Cocoon mattress is a decent mattress for sex because of several factors including its memory foam construction which enables it to be virtually silent. Typically a good mattress for sex rates highly in responsiveness, bounce, cooling and edge support. As a memory foam mattress, responsiveness and bounce are less present in the Cocoon but compared to other memory foam mattresses, the Cocoon Chill has enough cooling features and traction to help make it an enjoyable experience. 

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Cocoon Off Gassing

Like all foam mattresses, the Cocoon Chill memory foam mattress does emit an odor after it’s unpacked from its box. The odor is not considered harmful and it should dissipate after 24-72 hours. 

Sleeping Positions

Cocoon Mattress for Side Sleepers

Side sleepers are typically looking for the right balance between soft contouring comfort and a durable surface that will support the sensitive areas that absorb the most pressure from sleeping on their side. This usually includes their hips and shoulders. 

The Cocoon Chill is firmer than an average “medium” so it does both these things. Cocoon mattress reviews say that overall the mattress is not too soft and not too firm, just right in between. It will mold to the side sleeper's body while providing enough support to the hips and shoulders and spread their weight evenly across the mattress. 

However due to its firmer feeling, side sleepers above 130 lbs are best suited to the Cocoon Chill mattress. If you are below that weight, you might find the mattress too hard.

Cocoon Mattress for Back Sleepers

Back sleepers will typically want a firmer mattress that supports the key areas of impact on their mattress which would include their lower back and hips. The Cocoon Chill which falls at around a 6/7 on the firmness scale is a good range for back sleepers who want to feel like they’re sleeping on top of the mattress.

 The best mattress will be able to support the hips all the way up to the shoulders without sinking too much into the mattress. This will typically also depend on your weight, so for the Cocoon Chill, almost all weights will work but especially those that fall between 130 to 230 lbs. However if you have a heavier body weight than 230 lbs, you might look for an even firmer mattress for further support. 

Cocoon Mattress for Stomach Sleepers
Out of all types of sleepers, stomach sleepers are typically the most tricky to find the right mattress because they’ll need extra support to support their spine while also providing enough give so that it’s comfortable for their midsection. So you want to make sure that the mattress isn’t soft but also not hard enough that it will strain your lower back. For that reason, the Cocoon Chill mattress provides a good balance across all weight groups.
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Cocoon Mattress Price and Sizes

The Cocoon Chill mattress price is average compared to other memory foam mattresses on the market. Compared to its hybrid counterpart, the all foam version is cheaper. Taking into account its superior cooling abilities and all foam construction, the Cocoon Chill is a great value mattress for sleepers who love a foam surface but run hot. 

Sealy mattresses come in six standard sizes:

  1. Twin 
  2. Twin XL 
  3. Full 
  4. Queen 
  5. king
  6. California King
To check the full Cocoon pricing Click Here

Sealy Customer Service

Sealy Mattress Warranty 

The Cocoon Chill mattress has a nontransferable 10-year limited warranty. The warranty covers manufacturer defects. If there is a  covered defect, Sealy will either repair or replace your mattress.

Sealy 100 Night Trial

Sealy gives you 100 nights to try your Cocoon Mattress. Like most mattress companies, they recommend you give it a minimum of 30 days to break in your mattress. If after 30 nights you still do not like your mattress, Sealy will give you the choice of hauling the mattress, or donating it. Once the return is processed, they will issue you a full refund.

Cocoon by Sealy Delivery

The Cocoon Chill memory foam mattress ships in a box right to your doorstep. Shipping is free within the contiguous United States.

Cocoon by Sealy Return Policy

Sealy return policy is one of the best. If you don’t love your Cocoon by Sealy mattress, they will return your money, “no questions asked”. They will also come and pick up the mattress and donate it to a local agency.

Our Mattress Verdict

The Sealy brand is known for its quality bedroom products, and this has been translated nicely into the new Cocoon Chill mattress. This is a mattress that pretty much anyone who loves the cradling feel of memory foam will love. While it’s not the best memory foam for super-hot sleepers, the PCM material infused in its cover puts it ahead of other memory foam mattresses in terms of temperature management.

  • Cooling cover minimizes the issue of heat retention
  • Great motion isolation
  • Affordable price & financing
  • Below average edge support
  • Possibility of off-gassing after unpacking

Common Questions (FAQ)

The Sealy mattress company has been in the mattress business since 1881. They have a wide range of quality mattress lines including the Cocoon Chill which is one of their bed-in-a-box brands.

The Cocoon Chill comes as a hybrid or an all-foam mattress. In this Cocoon mattress review we covered the all-foam. For its price, quality and features, this is an affordable mattress for those looking for a budget mattress.

For side sleepers who weigh more than 130 lbs, the Cocoon Chill mattress is a good option because of its ability to spread a sleeper’s weight evenly across the mattress. As a side sleeper, you’ll want a significant amount of support on your hips and shoulders and the Cocoon Chill provides support for both these areas because of its memory foam layer which contours to your body while the transition layer will allow you to rest comfortable on top of the mattress without too much sinkage. 

The Cocoon Chill mattress is not intended for flipping due to its construction - the comfort layer is at the top and the supportive layers are at the bottom. However you can rotate the mattress every 3-6 months to promote even wear on each side of the mattress.
The Cocoon Chill memory foam mattress falls on the firmer side of the scale which makes it a good option for heavy sleepers who sleep on their stomachs or backs. Side sleepers who weigh over 230 lbs might enjoy a mattress that gives a little bit more give. Some Cocoon mattress complaints from heavy sleepers say that even with its cooling features, the Cocoon Chill was not cool enough.
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Dr. Ifran Saddique

Dr. Ifran Saddique


Dr. Saddique completed his Doctor of Medicine (MD) degree from the Combined Military Hospital Medical and Dental College between 2012 and 2017. His rigorous medical training has provided him with a solid foundation in medical sciences and clinical practice. He has held the position of Medical Doctor at St. Bartholomew Hospital, Barts NHS Trust since May 2023, where he has been actively involved in delivering high-quality healthcare services. Prior to that, he served as the Deputy Medical Superintendent at Children Hospital. Moreover, Dr. Irfan specializes in medical content writing and has provided his knowledge and expertise on many blogs and articles on health and fitness, behavioral health, and medical issues.

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