Cocoon Mattress Review
Sealy's Cocoon mattress brings a phase-change cooling cover and a choice of soft or firm feels to the bed-in-a-box category.
The soft gives a pleasant feel that hugs the sleeper but doesn't feel like quicksand.
Our reviewerA Solid First Bed-in-a-Box From an Industry Giant
The Cocoon is Sealy's first entry into the bed-in-a-box category, sold in a Soft and a Firm version. We rated the Cocoon Soft a 6 out of 10 on firmness and the Cocoon Firm an 8 out of 10, and even the softer version still felt firmer than many other soft mattresses we've tried, thanks to a personalized comfort layer that disperses pressure well for a range of sleepers.
Sinkage runs around 2 inches on the Soft and closer to 1 inch on the Firm. The Soft's give felt pleasant, hugging the sleeper without ever feeling like quicksand; the Firm, in our opinion, is overly hard and really only suits sleepers who want essentially no give.
Motion transfer was almost nonexistent, which is ideal for couples where one partner tosses and turns, though it does mean less bounce than a latex or spring bed. The mattress cover uses a phase-changing material that stayed cool to the touch and did a fantastic job regulating temperature throughout the night.
The one real catch is smell: customers have reported an odor on first unboxing that can take up to a week to fully dissipate, so we'd recommend airing the room out when the Cocoon first arrives.
At $799 for a queen with a 100-night trial and a 10-year warranty, the Cocoon Soft is a genuinely comfortable, competitively priced mattress from a company with over a century of manufacturing experience, even if the Firm version misses the mark for us.
Why We Love It
- The Cocoon Classic Soft is a comfortable mattress for a wide range of sleepers
- The Chill cover does an excellent job maintaining balanced temperature through the night
- Almost zero motion transfer, so couples sleep undisturbed
- Reasonably priced compared to industry competitors
- 100-night risk-free trial period
Considerations
- Strong off-gassing smell when first opening the box
- The Cocoon Firm mattress is overly hard
- Memory foam is less responsive than latex or spring beds
Our Hands-On Review
Cocoon uses a high-density foam base layer for support, almost too much support on the Firm version, which we found overly hard. The Soft's personalized comfort layer, by contrast, struck a better balance between pressure relief and structure.
We found almost zero horizontal motion transfer on the Cocoon, which is exactly what a light sleeper with a restless partner wants, though it does trade away some of the responsiveness you'd get from latex or springs.
Air It Out First
Customers have complained about the smell of the Cocoon mattress, which can take up to a week to dissipate. We recommend keeping doors and windows open when first unboxing it.
We Recommend This To Readers Who:
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Want medium or firm mattress options
The Cocoon Soft gives a slightly firmer feel that suits a broad range of sleepers; the Firm is only for those who want a very firm bed.
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Want movement-free sleep
The 2-inch memory foam top dampens movement, ideal for light sleepers disturbed by a partner's tossing and turning.
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Need a cooler bed cover
The optional Chill cover's phase-changing material pulls heat away from sleepers effectively.
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Want to buy from a reputable company
Unlike many newer mattress-in-a-box brands, Sealy has been manufacturing beds for over 100 years.
A Closer Look
Mattress Construction
We focused on the Soft mattress for construction; the Firm swaps the 2-inch poly foam layer for firmer support foam.
Mattress Cover
The Chill cover uses phase-changing material that's cool to the touch and gradually adjusts to the sleeper.
Top Layer
2 inches of memory foam give a soft, comfortable initial feel.
Middle Layer
2 inches of poly foam create the transition from comfort to firmness that defines the Cocoon Soft's feel.
Bottom Layer
6 inches of high-density support foam form the foundation, supporting the spine and body through the night.
Mattress Cost
A reasonably priced bed for the mattress-in-a-box industry, with additional discounts available.
| Option | Price |
|---|---|
| Twin | $399 |
| Full | $649 |
| QueenPopular | $799 |
| King | $999 |
| Cal King | $999 |
Good to Know
The Bottom Line
Sealy did a great job with their first bed-in-a-box. While the Firm is too hard for us, the Cocoon Soft's blend of layers promotes a comfortable night's sleep without being overly soft.
