These 3 ply face masks help decrease the transmission of viruses and other germs by blocking dust and microorganisms through high filtration capacity, while maintaining low breathing resistance. They are disposable and should be discarded after use. This level 1, 3 layer protective face mask includes a metal nose bar and is hypoallergenic, fiberglass free, FDA & CE registered (not intended for medical use). Also available in pink (#MSK104) and black (#MSK105).