These face masks are made from lycra fabric approved by the City of LA to create a protective barrier for the nose and mouth. These masks also feature a pocket that holds an optional filter for an added layer of protection. Each mask comes with 10 disposable filters. Disposable filters are made from non-woven 2-oz poly cellulose. These masks are not FDA-cleared. Please note these are not a replacement for medical grade N95 masks or PPE, but are meant to bridge the gap.