HomeCrate Natural Sleep Defence - Set of 2, Standard Water-Resistant/Bed Bug Proof Pillow Cover, Standard Size 21"X 27" PROTECTIVE BEDDING; Prevent saliva, sweat, and other body fluids from damaging your pillow, Never wash your pillow again! With the quality water resistant bed bug Proof pillow cover encasements. LUXIROUS PILLOW ENCASEMENT; Constructed from super Standard, professional quality water resistant fabric that ensures maxium comfort while protecting pillows from leaks and spills. EASIEST PILLOW COVER; Velcro locking security zipper flap. 100% Synthetic, non-woven fabric is cool and comfortable, Breathable water resistant membrane won't trap heat while you sleep. ALLERGEN PROTECTION; Help ease Asthma and other Respiratory conditions by blocking bed bugs, dust mites, allergens as you sleep. CARE INSTRUCTION; Machine washable, The Sleep Defense System is 100% Water Resistant and manufactured from easy to clean material.