Sleep Safe ZipCover 6 Gauge Vinyl Bed Bug, Dust Mite, and Allergen Proof Zippered Box Spring Encasement / Allergy Mattress Protector Cover / Queen - 60 inches x 80 inches x 9 inches Vinyl Waterproof, 6 gauge extra thick vinyl box spring encasement Durable, vinyl six sided zippered cover with reinforced seams Sewn in locking zipper construction with a double lock zipper Treated with Ultra FreshTM DM-50 to retard mildew, mold, rot, and fungi Protection from bed bug infestation, dust mites, insects, and allergens