Protect your mattress investment with an added barrier. This complete mattress encasement is waterproof, breathable and will extend the life of your mattress. A zipper lock 3-sided enclosure provides 360-degree protection from spills, stains, dust mites, bed bugs and bacteria. An ideal solution for asthma and allergy sufferers needing a clean and fresh sleep environment. Will accommodate mattresses up to 18” deep.