mask with valve 1, soft fabric, cut uniform, wear comfortable 2,pleasing in appearance N95 round valve mask Packing: 20pcs/box, 400pcs/ctn ... breathing without the resistance 6, suitable for European facial 7, with the latest PPE (III) EN149 + A1: 2009; FFPW CE ... products in France, Japan, the market reaction to goodUsing non-toxic, tasteless, non-allergic materials. High efficiency, low resistance. ...