Luxury Cotton Rich Bed Bug Blocker Zippered Mattress Protector: * Complete mattress encasement * 2-layer special-coated fabric and a triple seal closure system * Recommended by doctors, allergists and entomologists * Fits mattresses and boxsprings up to 18" deep * Bed bug blocker, allergen barrier and dust mite blocker * Stain-resistant * Waterproof * 200-thread-count cotton rich fabric for soft and safe sleeping