by Quick answer: Stearns & Foster, a Tempur Sealy brand, offers a 10-year limited warranty covering sag over 1.5 inches on quilted tops, measured without weight. The law-tag code sets whether a deductible applies, and any stain can void coverage.
By the MattressNut editorial team · Updated June 2026
Stearns & Foster's Warranty Explained
Stearns & Foster is a premium Tempur Sealy brand, and most models carry a 10-year limited warranty, though coverage can vary by model. The warranty code on the law tag tells the story: the number left of the slash is the deductible-free period, the number right of the slash is the total term. If those numbers differ, later claims carry a deductible.
Key Terms (what we could verify)
| Item | Detail |
|---|---|
| Warranty length | Typically 10 years; some models carry shorter terms (check the law tag) |
| Sag threshold covered | Over 1.5 inches for quilted/tufted tops, over 0.75 inch for flat panel tops, measured with no weight on the bed |
| Who pays transport | You. Transportation and inspection costs are your responsibility |
| Common exclusions | Misuse, improper frame, stains (any stain can void it), and mold/mildew after purchase |
| How to start | brand's official warranty page |
How to File / What to Do
If you bought in a store, start with that retailer; if you bought online or the retailer closed, file through Stearns & Foster's official warranty page. You'll need proof of purchase, a full photo of the mattress without bedding, and a photo of your frame or foundation. To document sag, lay a yardstick across the dip and stand a ruler or quarter in the deepest point to show depth without weight. Expect a decision in roughly 7–10 business days, and note the terms include a binding arbitration clause with an opt-out.
Common Problems Owners Report
The stain clause catches many owners — any stain, even unrelated to the defect, can void the warranty, which is why a waterproof protector from day one matters. The 1.5-inch measurement is also taken without body weight, so impressions that feel deep while lying down often don't qualify. Improper frame support is another frequent denial reason.
The Saatva Comparison
Saatva's Saatva Classic offers a lifetime warranty rather than a 10-year term, plus a 365-night trial, flat $99 returns, and free white-glove delivery. While stain and support rules are common across the industry, Saatva's longer coverage and free delivery reduce the out-of-pocket exposure on a claim.
See the Saatva Classic warranty & trial
Bottom Line
Stearns & Foster's 10-year warranty is legitimate but strict: measure sag without weight, keep the mattress stain-free, and use a proper frame. Read the law tag to know if a deductible applies.
Bottom line: Stearns & Foster covers sag over 1.5 inches for about 10 years, but a single stain can void the whole thing.
Related: our full Saatva mattress review.