55% Viscose Made from Bamboo, 45% Polyester Down Featherproof - Our pillow covers will block feathers, protect you from feathers poking through your feather throw pillows Waterproof - There is a layer of membrane on the back, soft, flexible and quiet, it will protect your pillows from all kinds of liquids such as perspiration, sweats, drool and other stains Soft & Durable - The surface of the pillow protectors is made with bamboo viscose terry, which is soft to touch and breathable Fully Protection - Our zippered pillow protectors are made with fine teeth zipper, 360 all around protection Easy to Care - Machine washable, tumble dry low. Reduce the trouble of cleaning the whole pillow. Feather proof down proof pillow covers for throw pillow Bamboo viscose terry surface waterproof pillow protectors