If you missed out on our Saatva Cyber Monday deal, you're in luck. The brand extended our exclusive code through Sunday, December 7, giving you extra time to save 20 percent on a luxe Saatva mattress . All you need to do to take advantage is shop through the links in this story.

Our editors have tested countless mattresses, and several Saatva models—including the Classic and the Rx —have earned high praise.

Maybe you tweaked your back last week and have come to terms with the fact that your old mattress from a box is no longer cutting it. Perhaps your in-laws are coming to visit for the holidays, which means it's time to move your old mattress to your guest room and treat yourself to an upgrade. Or maybe you just got a new bed frame and want to refresh your entire sleep set-u

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