A bed brand that carries some serious–and well-justified–clout, the Tempur-Pedic Tempur-ProAdapt Mattress is the latest from the innovators behind the original memory foam mattress. This one offers 12 inches of firm, cooling foam that provides double the pressure relief and doubles the convenience thanks to a zip-off out layer and super-stretch inner. Engineered with the help of NASA it promises to never lose shape and comes with a 10-year warranty.