The Handy Band Face Mask has a patent pending 2 button design which allows the user to wrap and store the mask around their wrist for easy portability while not in use. Made from 3 layers of soft, stretchy 95% cotton / 5% Spandex blended material the Handy Band is machine washable and comfortable to wear. With a size of 7 3/4" x 5" and stretch ear loops, one size fits most. Not certified for medical use.