This thin, waterproof mattress protector prevents liquids from passing through, keeping your mattress fresh and free from stains. It stays securely in place and will add years to the life of your mattress. Product details A mattress protector in recycled polyester with a waterproof layer that prevents liquid from passing through. A mattress protector between your sheet and mattress protects from stains and dirt and prolongs the life of your mattress. The elastic edging all around makes sure the mattress protector stays in place and also protects the sides of your mattress. The mattress protector is machine-washable at 140°F (Hot), a temperature that kills dust mites. Twin size 38” X 75”