Merax High Grade 10 inch Gel-Infused Memorey Foam Mattresses with Luxurious Removable Fabric Covers, CertiPUR-US Certified (Twin(LxWxH):75" x39" x10"inch) Covered with a soft, luxurious Flannelette fabric in Elegant White color, Perfect mattress for bunk beds, any standard bed frame . Durable and long-lasting fire-proof foam is known for the superior high density construction that will not lose its shape and comfortable support. The latest evolution of memory foam, replaces some of the traditional petroleum with natural plant oil to help keep your mattress fresh Cooling Gel Swirl memory foam reduces pressure points that cause you to toss and turn, so you sleep better Memory Foam on top of 1.5 inches of regular Air Infused Memory Foam 48D. Comprised of a thick 1.5 inch layer of Gel-Pro Memory Foam 48D. 7 inch high density foam base 25 D