Item:medical face mask 3-layer Color : white,blue,green,yellow,pink BFE: over 99.5% Item:medical face maskMaterial : 20GSM PPSB nonwoven+ 25GSM melt-blown + 20GSM PPSB nonwovenColor : white,blue,green,yellow,pinkSize : 17 x 9.5CM (for adult use)14.5 x 9.5CM (for children use)12 x 7CM (for baby use)Packing : 100pcs/box,2000pcs/cartonUse: medical mask, dust mask, protective mask, surgical mask