Outer layer: shaped cotton
Middle layer: soft cotton
Middle layer: P1/P2 melt blown filter
Inner layer: PP non-woven
CE certified under EN149: 2001+A1: 2009 regulation to have a filter efficiency level of 80% (FFP1) 94% (FFP2) or greater against particulate aerosols.
Good constructions design, without nose-liner and nose-clip.