Isolus 2.5 Inch Liquid Gel Memory Foam Mattress Topper - Twin 2.5" premium memory foam mattress topper with liquid gel layer Gel formula captures and distributes heat Soft, doughy consistency quickly conforms to body weight and position Super soft rayon from bamboo cover is removable, mildew proof, and hypoallergenic CertiPUR certified for safety of products and environmental stewardship, 3-year U.S. warranty