by Quick answer: BigFig carries a limited lifetime warranty: free replacement for defects and sagging deeper than 1 inch for the first 20 years, then you pay 50% of replacement cost. You measure the sag yourself using BigFig's tools and file through the brand's official warranty page.
By the MattressNut editorial team · Updated June 2026
BigFig's Warranty Explained
BigFig sells a heavy-duty mattress built for higher body weights, and it backs that with a limited lifetime warranty. The structure is two-tier. For the first 20 years, approved claims get a free repair or replacement. After year 20, you pay half the current replacement cost. Coverage is limited to the original purchaser, and the mattress has to stay in the US or Canada.
Key Terms (what we could verify)
| Item | Detail |
|---|---|
| Warranty length | Limited lifetime; non-prorated years 1–20, then 50% cost-share |
| Sag threshold covered | Body impressions of 1 inch or greater |
| Who pays transport | Not clearly published; check the brand's official warranty page |
| Common exclusions | Sag under 1 inch, improper bed frame or base, normal wear, comfort preference |
| How to start | brand's official warranty page |
How to File / What to Do
BigFig asks owners to self-measure. The company provides a measurement kit (a weighted string and a paper ruler) so you can document the depth of any sag. Strip the bed, photograph the affected area from the angles BigFig requests, and capture the measurement showing the depression hits 1 inch or more. Keep your proof of purchase. Then submit everything through BigFig's official warranty page. If you are unsure of the exact steps, the support center walks through the defect process in detail.
Common Problems Owners Report
The friction point owners mention most is the 1-inch threshold itself. BigFig measures sag at specific points, and a dip that looks severe along one axis can measure under 1 inch when checked side to side. Documented complaints describe claims denied because one measured point fell just below the cutoff. Follow the photo and measurement instructions exactly so your evidence is hard to dispute.
The Saatva Comparison
BigFig's lifetime coverage is genuinely strong for a plus-size mattress, but the self-measurement and strict 1-inch point test put the burden of proof on you. Saatva runs a comparable lifetime "Friends for Life" warranty and pairs it with a 365-night home trial, free white-glove delivery, and a $99 return if the bed is not right. That trial window matters: it lets you confirm the mattress works for your body before warranty terms ever come into play.
See the Saatva Classic warranty & trial
Bottom Line
BigFig's warranty is solid on paper, but the strict 1-inch sag rule and DIY measurement mean approval hinges on careful documentation. Keep your receipt, use BigFig's measuring tools, and photograph everything before you file.
Bottom line: BigFig covers sag over 1 inch for life, but you must measure it precisely yourself, so document carefully before filing.
Related: our full Saatva mattress review.