1.Model: 9001V 2.Type: Dust Mask Material: High-efficiency non-woven fiber Weight: 9001V (12 g / a) (g) Packing: 1 inner each bag,250 Piece each case Style: Flat Fold, Ear-loop Exhalation valve: Yes Protection level: A Material: non-woven fabric (by directed or random fiber and return which is a new generation of environmentally friendly materials with moisture, breathable, flexible light, does not help, of course, is easy to be decomposed, non-toxic irritating, rich colors, low price and other characteristics)