60% Polyester/40% Tencel BlendMACHINE WASHABLE – Close Zipper and machine wash and dry. Wash your pillow protector to reduce allergies by removing pollenZIPPERED PILLOW PROTECTOR – The zipper helps keep out dust mites and other unwanted creatures from getting into your pillow. Makes it just that much harder for bed begs to live in your pillowTENCEL FABRIC – Made from eucalyptus trees, it is one of the softest fabrics. It has thermo-regulating properties and keeps you warm in the winter and cool in the summer. Great for year round use!SLEEP BETTER GUARANTEE – We stand behind this product and if for any reason you aren’t happy with it, return it within thirty days for a refund.THREE YEAR MANUFACTURE WARRANTY – Wash this case as much as you want, it’s not going to break. If it does, email us and we’ll replace it.