... ,CE,FDA,GOST PP 2-ply face mask, elastic typeColour: White, Red, Blue, Green, Yellow, GerySize: 14.5x9cm / 17.5x9cm / 21x9cmMaterial: 20x25g Non-woven FabricDisposable surgical maskSize ... of 20gsm PP nonwoven.And it is 25 gsm filter in the center.Th inside ply is also make of 20Ggsm PP nonwoven. Disposable non-woven PP 2-ply face mask