Vault Boy - Fallout Pillowcase Cover Design For Custom Zippered Pillow Cases 20x30 (one side) 50% cotton, 50% polyester Material: Made of 100% Polyester Fabric. Durable heat-resistant non-woven fabric; non-slip neoprene rubber Soft and comfortable handing feeling , environmentally friendly Prevent water from splashing out of the shower stall Attachment: Has 12 holes to which rings attach Warm Note : Machine wash cold. Do not bleach or tumble dry