Kingnex Twin Xl Mattress Protector Waterproof For Extra Long Twin College Dorm Waterproof mattress protector fitted sheet style mattress cover Waterproof - Our mattress protector is coated with impermeable TPU backing that stops perspiration, urine, liquids, and stains; prolonging the life of your mattress. Smooth - Knitted polyester surface is soft and quiet, designed to be an unnoticeable barrier that will not change the feel of your mattress Fitted Sheet Style - Deep pocket with stretch skirt and high elastic band that will pulls the corners snugly for a smooth fit on most mattress types Durable Easy to Clean - Machine wash tumble dry low - For frequent accidents, buy 2 or more - while one is washed, the other protects the mattress Twin XL / Dorm bed (39 in x 80 in) - Fitted Sheet Style; Stretchable skirt fits Stretchable skirt fits up to 14" deep mattress.