Twin XL 3-inch Memory Foam Mattress Topper with Removeable Baffle Box CoverThis 3 Inch Memory Foam Gel Cooling Baffle Box Mattress Topper comes with 3 inch gel memory foam ventilated memory foam that is breathable, comfortable, and made of CertiPUR US certified materials. The outer fabric is 30% medium molecular PE+70% polyester, which is wear resistant, safe, and skin friendly. Extend mattress life an extra year or two. Replacing quality mattresses can be expensive, but a mattress topper is affordable. It's good for