Waterproof Bed Bug Hypoallergenic Mattress Pad/protector Microfiber HLC (Twin) Polyester Imported Protect your mattress from liquids and stains with the best mattress protector Specially designed velcro zipper defends against bed bugs, body fluids, skin flakes, bacteria, and dust mites Smooth polyester top layer is soft and comfortable under sheets 100% polyester microfiber with polyurethane laminated Fits up to 18 inch matress