3 ply Nonwoven Face Mask Tie-on 15 years manufacturer with ISO 7th gold supplier ... % by Nelson test Anti H1N1 flu 3-ply nonwoven face mask tie-on has high filtration efficiency 99.9% and is ... white, green, blue, yellow, or pink.Soft, lightweight, Comfortable, odorless, Form fitting design, Fiberglass free, Latex free earloops (option), Non-irritating ...