... Color: white, blue, green, pink, yellow, printedStyle: sewing , welding, w/o antifog plastic, single or double noseLayer: 1ply, 2 ply, 3ply ... breathing resistance and high filtration efficiency.Mini-fiber high electrostatic filter, filtration efficiency of dust & powder is over 95%. ... seal, easy to fold and carry. Mini-fiber high electrostatic filter, filtration efficiency of dust & powder is over 95%. ...