AirQueen Nanofiber Filter Safety Face Mask N95 Mask (20 PCS)Protection you can count on. Hypoallergenic, medical grade, personal protective equipment face masks. Easy to breathe face mask with exceptional filter. Nano fibers are only one nanometer in thickness and offer better permeability, blockability and more durability than any fiber ever invented. Our face masks are suitable for adults and children. Widely used in hospitals, when travelling through congested airports bus terminals malls parks and busy