55% Polyester, 45% Viscose Derived from Bamboo Imported Pack includes 2 x Standard Size Pillow Protectors measuring 21" (Width) x 27" (Length) made from Natural Viscose derived from Bamboo WATERPROOF: Whether you have pets or kids, accidents and spills happen. This 100% waterproof pillow protector has a polyurethane inner lining that blocks liquids and moisture from getting in and keeps your pillow waterproof, dry and protected! NONREACTIVE - Impenetrable cover helps you breathe easy. Sleeping on an uncovered pillow can exposes you to different types of impurities making it difficult to breathe and sleep. Seal out dust and pet hair for good! SOFT & NOISELESS: Stretchable, breathable fabric keeps liquids, contaminants out without compromising comfort. Designed to be soft and completely noiseless, ensuring a peaceful nights sleep. THICK, SOFT AND COMFY: Made of high quality natural Viscose derived from Bamboo on the pillow surface with an impermeable polyurethane inside lining. Intended for daily sleep and strong enough for heavy duty protection. Machine washable for easy cleaning and lasting use. Premium Quality Standard Size Pillowcase Encasement by Four Seasons Essentials! Protect Your Pillow from Fluids, Perspiration, and Stains! Set of 2 Standard size Zippered Pillow Protectors - Smooth and Noiseless fabric for a cool comfortable night's sleep 100% Waterproof - Machine washable; Easy to remove and wash -Keeps pillow feathers from poking out Top Surface: 45% Viscose made from Bamboo 55% Polyester; Inside Backing: 100% Polyurethane Washing Instructions: Machine wash warm. Rinse cold. Wash encasement alone for best results. After washing flip the encasement inside out so the waterproof backing faces out and run the machine for an extra spin cycle. Drying Instructions: Tumble dry on low heat only to line dry. For faster drying, add a large dry towel.