The Serta Defender Plus Mattress Pad is the perfect choice to add additional comfort and support while protecting your mattress. This piece features a cotton/polyester blend waterproof jersey cover to help ensure accidental spills aren"t an issue. A full-surrounding skirt fits snugly over any standard-sized mattresses and is treated with a sanitary antimicrobial agent. The piece is machine washable and is available in California king, king, queen, full, and twin sizes. Mattress Pad Dimensions * Twin: 75 x 39 inches * Full: 75 x 54 inches * Queen: 80 x 60 inches * King: 80 x 76 inches * California king: 84 x 72 inches * Double jersey cotton blend cover * Convoluted memory foam core * Features a solid white cover * Cover is machine washable * Multiple sizes are available