Disposable FFP2 NR Mask filtering half mask earloop 5Plys adult mask. With FDA, CE, Certified. This mask filters at least 95% of 0.3microns of particles in the air 4 layers of material: First layer: 60g 2S non-woven fabric. Layer 2:25g melt-blown cloth. Third layer: 45 grams of hot wind cotton. Fourth layer: 25g melt-blown cloth. Mask size: 21cm*8.5cm .Nose clip size: 9cm*0.6cm. Nose clip material: metal. Executive standard: EN149:2001+A1:2009. The product has regular stock. Welcome to your inquiry. FDA Registration #3016713638