Pillow Protector Cover - Bed Bug Pillow Protector - Waterproof & Hypoallergenic - Protects Against Bed Bugs, Dust Mites, Allergens, and Bacteria - Fully Encases Your Pillow - Money Back Guarantee (King (21 x 37)) 100% Waterproof and Breathable Protects against Bed Bugs, Allergens, Dust Mites, and Bacteria Polyurethane Membrane allows air passage, but blocks liquids 100% Cotton Terry surface absorbs moisture 10 Year Warranty