Stuff4Tots Waterproof Mattress Protector (Twin Bed) &ndash; Premium Quality Fitted Cover Sheet. Vinyl-Free. Hypoallergenic & Breathable. Machine Washable. 39x75in Cotton 100% WATERPROOF - Keeps expensive mattress Clean & Dry. Blocks moisture, dust mites and allergens COOL, COMFORTABLE SLEEP - Breathable layer allows air to circulate FITS SNUGLY AND EASILY - 15" stretchable skirt suitable for any depth mattress. Prevents bunching SOFT & QUIET - Three Layer Protection - 200 TC cotton top surface for softness, microfiber polyester filling for air circulation, TPU bottom layer for waterproofing. Vinyl-free so no plasticky feel or annoying crinkly noises LIFETIME WARRANTY - Cool, comfortable sleep or your money back!