Sewn-in Pocket for optional removable filter (filter not included). 2 Ply 100% cotton fabric. Meets requirements for non-surgical face covering (no BFE rating). Reusable and machine-washable. Individually packaged in a poly bag. Care Instructions For best fit and comfort, wash before use. Wash on delicate cycle in cold water. Do not use bleach. Air Dry or tumble dry low heat.