Cocoon Mattress Review

flag 130 years of high-quality mattresses
  • Proprietary cover dissipates heat

  • Free shipping in average of 2-3 days

  • Designed and built in the USA

  • Choice of medium-soft or extra-firm

Pros & Cons

  • Trustworthy brand with 130 years in business
  • Affordable price
  • Choice of two firmness levels
  • Cooling technology perfect for warm sleepers
  • Hybrid option available
  • Cover is not removable or machine-washable

Sizes & Pricing

Both the Cocoon Chill and the Chill Hybrid are available in twin, twin XL, full, queen, king, and Cal king. The Chill is 10 inches in height whereas the Hybrid is 12 inches tall. The Cocoon mattresses are more affordable than many mattress competitors, and people feel reassured knowing they are getting a mattress by one of the nation’s top mattress brands.

Twin: The twin measures 74.5 x 38″ and normally costs $730 for the Chill and $999 for the Chill Hybrid.

Twin XL: The twin XL measures 79.5 x 38″ and costs $770 for the Chill and $1,199 for the Chill Hybrid.

Full: The full mattress measures 74.5″ x 53″ and usually sells for $850 for the Chill and $1,299 for the Chill Hybrid.

Queen: The queen’s dimensions are 79.5 x 60″ and costs $1,080 for the Chill and $1,499 for the Chill Hybrid.

King: The king is 79.5 x 76″ and costs $1,310 for the Chill and $1,699 for the Chill Hybrid.

Cal King: The Cal king is 83.5 x 72″ and costs $1,310 for the Chill and $1,699 for the Chill Hybrid.

Keep in mind that Cocoon by Sealy often runs sales so you can normally score these mattresses for less.

from $1,080
from $730
Twin XL
from $770
from $850
from $1,310
Cal King
from $1,310


Sealy is one of the most trusted mattress brands on the globe, having been in the business for 130 years, and it is now offering the Cocoon by Sealy Chill mattress and its new Chill Hybrid mattress to online customers. This affordable memory foam mattress is available in two firmness levels whereas the Hybrid comes in one firmness. These mattresses are ideal for those who have trouble staying cool at night and want the comfort of memory foam.


  • "Price"
    9 /10
  • "Comfort"
    8 /10
  • " Body Support"
    9 /10
  • "Customer Support"
    9.5 /10


The Cocoon Chill was designed to keep sleepers comfortable and cool all night long. It accomplishes this with innovative design and materials. This premium three-layer mattress is built in the United States.

Perfect Fit Memory Foam

The top layer of the Cocoon Chill mattress is its perfect fit memory foam layer. As with all high-quality memory foam, it adapts to the size and position of sleepers throughout the night. This foam is also certified by CertiPUR-US, meaning that it is made without ozone depleters, formaldehyde, PBDEs, phthalates, and other harmful chemicals.

Personalized Comfort (Cocoon Chill only)

The personalized comfort layer allows sleepers to customize the degree of comfort they want. The mattress is available in medium-soft and extra firm. For sleepers who prefer to sleep “in” bed, cocooned and enveloped by the mattress, medium-soft is the best choice. If you prefer to feel like you’re sleeping “on” the bed, however, extra firm is the way to go.

Active Support Technology Coil Layer (Cocoon Chill Hybrid only)

This layer is made up of fabric-encased coils. The casing reduces motion transfer that one might normally feel with coils, as well as does away with squeaking. Additionally, the coils allow for even great airflow, creating a cool and comfortable sleep environment. A reinforced steel perimeter means this mattress has exceptional edge support.

Support Layers

Sealy has engineered support layers to ensure the bed is resilient and durable. The company uses heavy foam that bounces back after each use. This base support system varies slightly depending on whether you have chosen medium-soft or extra firm. For medium-soft, Flexible Essential Support Foam is used in construction. For extra firm, on the other hand, Reinforced Essential Support Foam is used in the base layer.

cocoon by sealy

Mattress Cover

Cocoon by Sealy’s Chill mattress  and Chill Hybrid mattress manage to keep sleepers cool throughout the night thanks to cooling technology in their stretch-knit mattress cover. This cover includes “Phase Change Material” that absorbs body heat and dissipates it to keep sleepers cool. The material is cool to the touch and does a nice job of regulating temperatures all night long.

If the mattress cover needs to be cleaned, spot-cleaning is recommended with water and gentle detergent.

Firmness, Feel & Support

As mentioned before, the Cocoon Chill is available in two firmness levels. The medium-soft firmness option is designed for multi-positioned sleepers, while the extra firm is ideal for back sleepers. Side sleepers can also use both mattresses, but petite individuals likely won’t get enough support if they sleep on their sides. Along with sleeping styles, this mattress is best for people who have trouble staying cool at night.

The mattress has an average degree of sinkage. The medium-soft mattress sinks by as much as 2 inches and the firm mattress sinks by approximately 1 inch when lying on the stomach or back. Side sleepers experience a greater degree of sinkage, with the medium-soft mattress sinking 2 inches and the extra firm mattress sinking 3 inches. Both mattresses have additional sinkage on the edges. Expect sinkage of 4-5 inches on the sides.

While lying on the side of the bed can feel a bit precarious due to the sinkage, the middle of the bed is quite comfortable. The medium-soft mattress wraps sleepers up, while the extra-firm mattress has lots of padding that keeps sleepers comfortable.

Like many other memory foam mattresses, the motion transfer is a cause for concern. While the motion transfer is considerably mild on the medium-soft mattress, it can be disruptive on the extra-firm mattress. Couples that share a bed should consider this before purchasing the Cocoon by Sealy.

As for the Chill Hybrid, this mattress is available only in one firmness level: medium. On a scale of 1 to 10, with 10 being the firmest, the Chill Hybrid would score about a 6. Like the Chill, it’s designed to keep you cool at night. In fact, the Hybrid does even better than the Chill in this regard thanks to the breathable coil layer that promotes greater airflow. The edge support in this mattress is also better than the original Chill, since it has reinforced titanium steel coils. Individual fabric encasing of the coils does a good job of minimizing motion transfer.

Purchase & Delivery Process

It is very easy to purchase Cocoon by Sealy right on their website in just a couple of minutes. Simply choose the desired mattress size and firmness level, and you’re ready to check out. If you wish to finance through Sealy, you can apply when ordering the mattress. All orders are processed within 48 hours, unless you place your order on a weekend or holiday.

Once your order is placed, you’ll receive a tracking number. Shipping is free by UPS Ground within the contiguous United States, and it takes 2-3 days to receive the mattress. Once the mattress arrives, you have a full 100 days to try it to see if you like it. If you don’t, Sealy will pick up the mattress and refund your money.

Customer support

Sealy is known for its outstanding customer support. The support team provides phone, live chat, and email support. Customers can also peruse the FAQ section or watch videos for help.

  • Phone Support
    Customers can call Sealy at (888) 818-4039 Monday through Friday from 9 a.m. to 9 p.m. EST and on Saturday and Sunday from 9 a.m. to 6 p.m.
  • Live Online Chat
    Live chat is available during customer service hours.
  • Email
    Email support is available. Customers can email
  • Video Tutorials
    Sealy has a few short video tutorials on its website.
  • FAQ
    The company’s FAQ section answers common questions.

Final Word

With two mattresses to choose from, superior cooling technology, and top-notch customer support, Cocoon by Sealy is an excellent option for those who want a high-quality mattress at an affordable price. The price is significantly lower than many competitors thanks to frequent sales, and the product delivers on many of its promises, including the cooling technology and a comfortable night’s sleep. Consumers should be mindful of the motion transfer if they choose the extra firm model of the Chill mattress since this can cause issues when sharing a bed. With a 100-day trial period, though, people who are on the fence can try this mattress before making a commitment.

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Cedric Jackson>
Cedric Jackson

Cedric is a Top 5 Network contributing writer. When he is not researching and reviewing consumer products, he spends his time traveling, reading, and keeping up with current events.

This review is based on the writer's personal opinion.
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Questions & Answers

Ron H.

Where is the Cocoon mattress made?

The Cocoon mattress is made right here in the USA.

Do I have to put the mattress back in its original box to return it?

No, returns are hassle-free with no need to return the mattress to its box.

How much is delivery?

Delivery is free.
bert Wagner

I have an adjustable bed frame, will this mattress work?

Yes, the Cocoon can be used on an adjustable frame.
Judy Reimert

Will the Cocoon fit on a standard queen box spring?

Yes, as long as you purchase the queen size of the mattress.
glenn corcoran

do you need a box spring

You can use the mattress with a box spring, an adjustable base, a platform bed frame, or a slatted bed frame, as long as the slats are at least 2 inches wide and no more than 5 inches apart.
virginia venti

Is there any kind of odor from the foam

You may notice a slight smell when you open the mattress but it usually resolves within a few hours.

What is the thickness of the mattress

The mattress is 10 inches thick.
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