FFP1 DUST/MIST MASK Conforms to CE EN149:2001+A1:2009 FFP1D approved dust mask and pass the optional Dolomite (D) clogging test. Polypropylene (PP) inner layer and patent composite filter media provides very low breahting resistance Embossed fringe seal avoides fluffy open layer around the edges Contoured facial seal and lates-free head straps offer a comfortable secure fit