by Quick answer: Cocoon by Sealy provides a 10-year limited warranty. For its all-foam mattresses, covered sag means an indentation over 1 inch not caused by a bad base. Repairs are free during the term, but you pay transport, and it's original-owner only.
By the MattressNut editorial team · Updated June 2026
Cocoon by Sealy's Warranty Explained
Cocoon by Sealy covers your mattress with a 10-year limited warranty from the original purchase date. Within that window, a covered defect is repaired or replaced at no charge for the product itself. It's worth noting the threshold differs from the broader Sealy line: Cocoon's foam mattresses use a 1-inch sag standard, while standard Sealy quilted models use 1.5 inches.
Key Terms (what we could verify)
| Item | Detail |
|---|---|
| Warranty length | 10-year limited, original purchaser |
| Sag threshold covered | Indentation greater than 1 inch (Cocoon foam) not caused by an improper or unsupportive base |
| Who pays transport | You. Repair/replacement is free, but transportation costs are your responsibility |
| Common exclusions | Sag from a bad base, misuse, unsanitary condition, resold/"as-is" units, and mold after purchase (unless found within 30 days) |
| How to start | brand's official warranty page |
How to File / What to Do
You'll need proof of purchase and your warranty code, found on the law tag under the zip cover. Strip the bedding and photograph the defect; for sag, lay a yardstick across the dip and use a ruler in the deepest part to show depth without weight. Include a photo of your frame or foundation. File through Cocoon by Sealy's official warranty page. If approved, you receive a promo code to order a replacement on the warranty site, and you surrender the original mattress.
Common Problems Owners Report
A replacement starts no new warranty — coverage still runs from your original purchase date. The foundation requirement is a common denial point, since Cocoon can ask for proof your base is adequate. The terms also include a binding arbitration clause with an opt-out, which surprises owners expecting a court option.
The Saatva Comparison
Saatva's Saatva Classic carries a lifetime warranty versus Cocoon's 10 years, plus a 365-night trial, flat $99 returns, and free white-glove delivery with old-mattress removal. The longer term and included delivery mean less cost and less paperwork if something goes wrong years later.
See the Saatva Classic warranty & trial
Bottom Line
Cocoon by Sealy's 10-year warranty is straightforward for the original owner, but you pay transport and must prove proper support. Keep your law tag, receipt, and a supportive base.
Bottom line: Cocoon covers foam sag over 1 inch for 10 years, but you cover transport and must show a proper foundation.
Related: our full Saatva mattress review.