When you buy through our links, we may earn a commission. Products or services may be offered by an affiliated entity. Learn more.

Price Range

$619 – $1,389

Mattress Type


Firmness Options:

Medium Firm (6)



















Ideal For:

  1. Hot sleepers who prefer a memory foam bed
  2. People looking for pressure relief
  3. Back and stomach sleepers from all weight groups
  4. Couples and light sleepers who are easily disturbed by noise and motion transfer


  1. All-foam construction sleeps warmer than most hybrid and innerspring models
  2. May be too firm for side sleepers who weigh less than 130 pounds
  3. Close-conforming foam might not be the right fit for sleepers who prefer a springy, responsive surface
  4. Lacks strong edge support

Sleep Foundation Special Offer

Save 35% on a Cocoon Chill Mattress and get free pillows and sheets

Sealy has a long history within the mattress industry. The company began producing mattresses in 1881 and is now part of Tempur Sealy International. Its product line includes a wide range of mattresses, bed bases, bedding, and sleep accessories. The Cocoon Chill is one of Sealy’s boxed mattresses that ships directly to the customer’s home.

This model comes in both all-foam and hybrid constructions, but we will focus on the all-foam Cocoon Chill. It has a medium firm (6) feel and offers sleepers a comfortable blend of stable support and close-conforming pressure relief. The Cocoon Chill is priced competitively given its features, making it a good option for value seekers considering an all-foam mattress.

Sealy has designed the Cocoon Chill with temperature neutrality in mind, including several features engineered to keep the mattress cooler than some all-foam models. It’s a versatile mattress that is well suited to a wide variety of sleepers.

We will take an in-depth look at the mattress’ construction, components, pricing, and performance ratings as well as company policies on warranties and shipping to help you decide whether the Cocoon Chill Mattress is a good fit for you.

Ratings Summary

Motion Isolation:
Temperature Control:
Pressure Relief:
Edge Support:
Ease of Movement:
Off Gassing:

Cocoon Chill Video Review

Watch the video below to see how the Cocoon Chill Mattress performed when put to the test in our lab.

Mattress Performance

Motion Isolation


A mattress that isolates motion well prevents movement from transferring across the bed. Typically, all-foam mattresses absorb movement instead of transferring it, which can be beneficial for couples, light sleepers, and those who share their bed with kids or pets.

Like most all-foam models, the Cocoon Chill Mattress minimizes the spread of vibrations. The all-foam layers, especially the memory foam, provide a hugging sensation that prevents disturbances from transferring across the surface. Tossing and turning on the Cocoon Chill Mattress is unlikely to wake up your partner.

Pressure Relief

Side sleepers and people who suffer from back pain often seek out a mattress that relieves pressure. Models that contain memory foam usually excel in this area by shaping to the body to spread out its weight and cushioning particularly painful areas.

The Cocoon Chill’s memory foam comfort layer offers close-conforming pressure relief. The transitional layer and support core promote spinal alignment, while the memory foam comfort layer compresses slightly under the hips and shoulders to relieve pressure buildup and redistribute body weight.

Pressure-relieving mattresses are often geared more toward side sleepers, who typically need extra contouring to accommodate the width of their hips and shoulders more comfortably. However, the Cocoon Chill’s support core and transitional layers are also firm and even enough to support stomach and back sleepers.

Temperature Control

Memory foam mattresses often sleep hot because their close hug can trap body heat. The Cocoon Chill has several features that combat this issue and as a result, it sleeps cooler than many of its all-foam competitors.

The mattress’ cover is made from phase change material designed to regulate body temperature by wicking heat away from the body.

Additionally, the memory foam comfort layer is lower-density, meaning it doesn’t hug as closely to the body and more heat can escape. However, low-density foam is typically less durable than its high-density counterparts, which may be something to consider if you value a mattress with a long lifespan.

Edge Support

Couples, sleepers who tend to lie close to the side of the mattress, and those who struggle to get into and out of bed typically prefer a mattress that has strong edge support. The strength of your bed’s perimeter depends on its materials and construction.

Foam mattresses often don’t have strong support around their sides. Though the Cocoon Chill has high-density foam in its support core, the edge isn’t reinforced enough to prevent noticeable sagging. Sleepers who need a firm edge to get out of bed are likely to benefit from a hybrid, innerspring, or perimeter-reinforced all-foam mattress.

Ease of Movement

Responsive sleep surfaces are typically easier to move around on. Since all-foam models usually hug the body and respond relatively slowly to changes in pressure, they often feel more restrictive.

The Cocoon Chill has a higher-than-average score for ease of movement compared to other all-foam models. This is likely due to its high-density support core and firmer transition layer, which allow you to move on top of the mattress without sinking in too deeply.

Sleepers seeking a highly responsive mattress that is very easy to move on may want to consider a hybrid model, such as the Cocoon Chill Hybrid, or an innerspring mattress. However, the Cocoon Chill rates higher-than-average for an all-foam model.


When it comes to sex, couples typically prefer a mattress with high responsiveness, edge support, and bounce. This combination of characteristics creates a surface that allows for easy movement. Since these areas are usually the weak points of all-foam models, they’re often less conducive to intimate activity.

Couples may find the Cocoon Chill’s memory foam layer restricts movement to an extent, though its conforming could also add traction. This mattress is also virtually silent, which can be a benefit if you share a wall with neighbors.


All-foam mattresses often put off a chemical odor when they’re unrolled from their vacuum-sealed bag. The scent isn’t usually considered harmful, but it can be unpleasant.

The Cocoon Chill has a distinct smell when it’s first opened. The foam traps a manufacturing scent inside its cells, and it can take a few days for the odor to dissipate. Sleepers who are sensitive to smells may prefer to let their mattress air out before use.

Placing the mattress in a well-ventilated area can speed up the off-gassing process. Though the Cocoon Chill has noticeable off-gassing odors when first opened, this shouldn’t last more than a few days.

Cocoon Chill Mattress Coupon

Sleep Foundation Special Offer

Save 35% on a Cocoon Chill Mattress and get free pillows and sheets

Sleeping Style and Body Weight

Cocoon Chill

Sleeper Type

Under 130 lbs

130-230 lbs

Above 230 lbs

Side Sleepers

Side Sleepers

Under 130 lbs

130-230 lbs

Above 230 lbs

Back Sleepers

Back Sleepers

Under 130 lbs

130-230 lbs

Above 230 lbs

Stomach Sleepers

Stomach Sleepers

Under 130 lbs

130-230 lbs

Above 230 lbs

Side Sleepers

Side sleepers typically have the most significant pressure points of all the sleeper types. When you lay on your side, the majority of your weight rests on your hips and shoulders, which can create uncomfortable pressure buildup.

Side sleepers generally prefer a mattress with a mix of contouring relief and stable support. The Cocoon Chill does both these things well. Its memory foam comfort layer molds to a side sleeper’s body and spreads out its weight to ease pressure points, while the supportive polyfoam transition layer and core limit sinkage.

Because of its medium firm feel, the Cocoon Chill may be best suited for side sleepers who weigh over 130 pounds. Side sleepers who weigh under 130 pounds may notice more pressure accumulation around their hips and shoulders since they won’t sink in as deeply.

Back Sleepers

Back sleepers generally prefer to feel as if they’re “sleeping on” a mattress instead of “sleeping in” one. Sinking too far into a mattress can cause discomfort for a back sleeper, especially since their hips could dip more deeply into the mattress than the rest of their body and put pressure on their lower back. The best mattress for back sleepers is often one that gently cradles the hips while providing enough support to align the spine.

Thanks to the Cocoon Chill’s memory foam comfort layer, a back sleeper’s hips should be able to sink in just a bit. Support from the polyfoam transition layer and core help promote healthy sleep posture.

The Cocoon Chill performed well for back sleepers of all weights, especially those between 130 and 230 pounds. Back sleepers under 130 pounds may not enjoy as much cradling as they’d like, while those who weigh over 230 pounds could experience some sinkage around their hips.

Stomach Sleepers

Stomach sleepers need extra support in order to maintain spinal alignment and stay comfortable. A mattress that’s too soft can allow a stomach sleeper’s midsection to sink into the support core, which can put a strain on their lower back. A mattress on the firmer side prevents this by providing even support.

Stomach sleepers across all weight groups found the Cocoon Chill supportive enough to maintain a comfortable position throughout the night. The polyfoam transition layer and support core keep the mattress true to its medium firm rating and help prevent the sleeper’s midsection from sinking in too deeply, while the memory foam comfort layer adds some softness to the surface.

Cocoon Chill Mattress Review Breakdown

The Cocoon Chill Mattress is an all-foam model that rates as a 6 out of 10 on the firmness scale, making it medium firm. This feel makes it well suited to a variety of body types and sleep positions. The mattress has three foam layers that are each designed with different purposes for a balanced performance with both support and contouring. It also includes an innovative cover that’s engineered to sleep cool. The Cocoon Chill measures 10 inches tall, so it shouldn’t require deep pocket sheets.

A high-density polyfoam support core is stable, supportive, and engineered for durability. The polyfoam transitional layer sits on top of the support core. It is fairly firm to help prevent sleepers from sinking in against the firmer support layer. Since it is responsive and bounces quickly back to its original shape, this layer also improves the overall ease of movement.

The memory foam comfort layer conforms closely to the body to provide contouring and pressure point relief. As a fairly low-density memory foam, it tends to retain less heat. However, low-density foam is also typically less durable.

One of the Cocoon Chill’s most notable features is its knit cover, which is infused with phase change material designed to regulate body temperature. This material is engineered to absorb and dissipate excess body heat to keep your mattress surface cool throughout the night. Combined with the low-density memory foam layer, the Cocoon Chill sleeps cool when compared to other memory foam mattresses.


Medium Firm – 6

Mattress Type



The Cocoon Chill has three foam layers, including a layer of memory foam and two layers of polyfoam. The cover is a stretch knit that’s infused with phase change material designed to better regulate body temperature.

Cover Material:

Phase Change Material

Comfort Layer:

Memory Foam, Polyfoam

Support Core:


Mattress Prices and Sizing

The Cocoon Chill’s price-point is around average compared to other all-foam mattresses, which typically run $900 to $1,200 for a queen. Sealy also offers the Cocoon Chill in a hybrid version, which is more expensive than the all-foam model but costs less than average for a similarly constructed mattress. Considering the materials and cooling technologies included in the bed, the all-foam Cocoon Chill may be a good option for value seekers.

The mattress is available for purchase in the six standard sizes: twin, twin XL, full, queen, king, and California king. Sealy offers optional sheet and pillow bundles that are designed to complement the mattress. You can also add-on a compatible bed base or foundation.

Sizes Dimensions Height Weight Price
Twin 38″ x 75″ 10″ 40 lbs. $619
Twin XL 38″ x 80″ 10″ 42 lbs. $709
Full 53″ x 75″ 10″ 56 lbs. $819
Queen 60″ x 80″ 13″ 64 lbs. $1,079
King 76″ x 80″ 13″ 83 lbs. $1,389
California King 72″ x 84″ 10″ 83 lbs. $1,389

Sleep Foundation Special Offer

Save 35% on a Cocoon Chill Mattress and get free pillows and sheets

Trial, Warranty, and Shipping Policies


Though Sealy does offer some models through brick-and-mortar retail partner locations, the Cocoon Chill can only be purchased online through the Cocoon by Sealy website.


The Cocoon Chill ships for free within the contiguous United States via UPS Ground. On weekdays, Sealy processes orders within 48 hours and ships the mattress directly to the customer’s home. Most shoppers receive their mattresses within 5 to 7 days. The mattress arrives compressed, rolled, vacuum-sealed in plastic, and packaged in a box. The customer will need to bring it into their home, place it in their room of choice, and set it up. Unpacking instructions are included.

Additional Services

Sealy does not offer standard White Glove delivery or old mattress removal with your mattress purchase. However, customers who also buy an Ease Power Base in addition to the Cocoon Chill Mattress qualify for free White Glove delivery and old mattress removal. Expedited and weekend shipping are also available for an additional fee.

Sleep Trial

Your mattress purchase includes a 100-night sleep trial. Sealy recommends sleeping on your mattress for a minimum of 30 nights to adjust.

Sleepers who choose to return their Cocoon Chill must coordinate a return with Sealy. The company will arrange to haul away your mattress, donate it to a local charity, and issue a full refund of the purchase price once the return is confirmed. This policy is limited to one return per customer.


The Cocoon Chill is backed by a nontransferable 10-year limited warranty. The warranty covers manufacturer defects that arise with normal use on a proper foundation. Eligible defects include indentations more than 1-inch deep and physical flaws, like tearing of the mattress cover. In the event that Sealy confirms a covered defect, the company will elect to either repair or replace the mattress. Additional terms and conditions apply.

Still have questions?

Our product experts have extensive experience testing just about every sleep product on the market. Send an email to [email protected] or call us at (877) 672-8966 with your questions and we’ll help you find exactly what you’re looking for.

Learn more about our Editorial Team