The PERLECARE 3 Inch Gel Memory Foam Mattress Topper is designed to provide pressure relief and a comfortable sleeping experience. The topper is made of memory foam and gel foam fill material, which helps regulate temperature and provide support. The topper is hypoallergenic and features a zipper closure for easy removal and cleaning. It is available in Twin size and is machine washable. The product dimensions are 74 x 38 x 3 inches and it weighs 12.54 pounds.