HOSPITOLOGY PRODUCTS Sleep Defense System - Waterproof/Bed Bug/Dust Mite Proof - PREMIUM Zippered Pillow Encasement & Hypoallergenic Protector, Set of 2, 20-Inch by 26-Inch, Standard 100% waterproof barrier for your pillow; zippered on one side Prevent saliva, sweat, and other body fluids from damaging your pillow; Never wash your pillow again! Extra-soft Polyester knit fabric is cool and comfortable; Breathable waterproof membrane won't trap heat while you sleep Help ease Asthma and other Respiratory conditions by blocking allergens as you sleep 2-year Limited Manufacturers Warranty