Challenging Tuft & Needle's 15% off sale, you can save 20% on the Tuft & Needle Original Mattress at Amazon. That's a full for less than $400 or a queen for less than $480. SEE ALSO: In a winter rut?

Learn more about how we select deals. TL;DR: The body-conforming Tuft & Needle memory foam mattress has a 15% off coupon at Amazon in in all sizes, saving you up to $112.50. People probably get ...