All orders ship next business day! Waterproof Zippered Mattress Protector, Twin Conditions:Excellent Used Condition, no tears or stains. Zippered mattress cover stretches to fit any Twin (38” x 75”) standard mattress depth from 12" to 18" 100% Waterproof barrier on all six sides of mattress - Lab-tested Extra-soft polyester knit fabric is cool and comfortable - breathable waterproof membrane won't trap heat Can help improve sleep by reducing common substances that can reach the sleeper and disrupt respiratory function Polyester Machine washable Smoke free home.