This Total Protection Mattress Pad by Beautyrest Black ensures ultimate comfort and total protection while extending the life of your mattress. The ultra-soft 400-thread count all cotton face provides a smooth surface to rest on each night and features an antimicrobial finish which inhibits the growth of common bacteria. Advanced waterproof and stain repellent fabric treatment helps stains wash out easily while keeping your mattress dry. You won’t have to worry about your mattress pad slipping and sliding throughout the night, because the Smart Grip stretch skirt provides a secure fit on mattresses up to 18-inches deep.