Pack of 3 cup masks class FFP3 NR. Protects against solid aerosols and/or liquids listed as toxic. Fitted with adjustable band, nose liner and aluminium nose clip to fit all face contours. Also fitted with breathing vent to provide more comfort and better communication as well as reducing heat build-up. Filter Efficiency ≥ 99%. Manufactured to BS EN 149:2001 + A1:2009.