Medtex M2 2-Layer Muslin Fabric Mask (1 piece)MT M2 Water repellent Muslin Fabric Mask Full of Quality! 100% fine muslin cotton, 2 layers Quality cotton fiber from COTTON USA Water repellent property reduces water penetration to and from the user's mouth and nose Plastic coated wire at the nose for a snug fit Reusable and washable; retains its water repellent properties for over 10 washes Made with materials that are safe for consumers and the environment Does not fully filter PM2. 5 and viruses