The Sealy Cool 12″ Medium Memory Foam Mattress with CopperChill™ Technology is designed for side and back sleepers, with a medium feel that offers both softness and support. Right now it's less than $500 at Wayfair.

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With early Memorial Day sales underway, you can save up to 73 percent on memory foam, hybrid, and gel foam options from popular brands, including Purple, Casper, Sleep Number, and Tempur-Pedic. After combing the internet for the best mattress deals,