Twin Size TEAR FREE HEAVY DUTY VINYL, ZIPPERED, WATERPROOF ALLERGEN & BEDBUG PROOF Mattress or Box Spring Cover - 39&rdquo; x 75&rdquo; x 9&rdquo; DEEP - compare price Vinyl Protects against bed bugs, dust mites, or allergens from escaping or entering box springs. 100% waterproof mattress cover material. Easy-to-clean vinyl cover; use damp cloth. No laundering or removal required. Stain-free, bedbug-proof vinyl mattress cover. Electronically-welded seams and zippers. Weight: 3 lbs. Dimensions: 39"W x 75"L x 9"D.