This comfortable, reusable and machine washable fabric mask is a great way to help protect against allergens, germs and pollution as well as the common cold, seasonal allergies, and breathing in smog. You can even use it as a room-darkening sleep mask to help improve the quantity and quality of your sleep. The stunning, crystal-accented, 2-ply fabric mask features a pocket inside for an optional carbon filter (#55330 sold separately) that provides extra protection. Hand wash. Cotton and polyester. One size fits most adults. Approx. 14"L x 5"H. Choose: White, Red, Multi or Black. This item is not returnable.