Support Blog

We’ll be the first to admit it: no mattress can be perfect for everyone. And that’s exactly why our 100-Night Trial exists to make your decision pressure-free—so you can focus on sleep, not second-guessing. At Sunday, we’ve spent years refining three thoughtfully engineered mattresses designed to suit most sleep styles....

We trust our customers—and 95% never return Our 100 Nights Trial is designed for real sleep, not fine print. If a mattress doesn’t suit you, we’re happy to take it back. No confusing hoops, no guilt trips. Just three simple conditions: The mattress should be free of major damage No...

First, a quick reassurance: We fully accept normal wear and tear. Gentle usage marks, light fabric creases, or surface dust from regular sleep—none of these will ever impact your refund. These are completely expected when someone tries a mattress properly. What follows are rare and extreme cases—think pet accidents, storage...

Quick summary: To get a full refund under the 100 Nights Trial, return the mattress or accessory in original condition with the invoice, and send your request by email within 100 nights of delivery. No partial refunds apply. We offer 100% refund if you are not happy with your purchase...

We get this question quite often—and it’s a good one. What exactly happens when someone returns a Sunday mattress? The short answer: we never resell a used or opened mattress. That’s just not something we’re comfortable doing, and we believe it’s not something our customers would appreciate either. So where...