Sealy Memory Foam Mattress Topper 3", Twin Size: Twin 39 x 75 x 3 inches with 12'' skirt that can fit a mattress up to 16'' Instantly makes any mattress more restful, comfortable and supportive in sagging areas of mattress Conforms to your body for greater comfort and support, providing a restful and rejuvenating sleep 10-year limited manufacturer warranty, Made In USA. Cover Machine Washable 100% polyester cover with an ultra-plush and silky soft fabric shell with a satin cording.