Five-layer safety face mask FFP2 NR Outer+inner: Fleece polypropylene 25 g /m²; Middle layer: Triple layer of melt-blown filter material 3 x 25 g / m² Heat-sealed finishes, with elastic fastening and nose clip Individual sealed bagging EN149: 2001 + A1: 2009 Filtering effect is at a level of 95% (BFE)