SERTA (King) 4 in Pillow Top & Memory Foam Mattress Topper (76" x 80") Machine washable cotton cover Deep-pocket/stretch-to-fit skirt. Fits most mattresses up to 18'' deep. Cradling support & pressure point relief 2'' quilted pillow top cover and 2'' memory foam, 3-lb. density Plush cushion offers breathable comfort Manufacturer's 10-year limited warranty