For civil use only. Earloop style. Four-ply mask. First layer is PP nonwoven which has water blocking effect/saliva proof effect. Second layer is PP melt blown cotton. Third layer is ES hot air cotton. Fourth layer is PP nonwoven fabric nice to face skin. Material(s): PP Nonwoven; PP Melt Blown Cotton; ES Hot Air Cotton; Spandex PU; Rating: KN95; Size Group: One Size Fits All; Resistance: Airborne Germs; Bacteria; Bodily Fluids; Cut Grass; Dust; Pollen.