Face Mask, Type IIR, 3-Ply (Box of 50) Our new HYGOSTAR 3-Ply Face Mask (Type IIR). – Available now for immediate delivery. Designed for comfort and protection with low exhalation resistance, integrated nose clip and reinforced PP outer layer for Type IIR resistance to liquids and aerosols. Excellent filter performance > 99% BFE Reinforced PP outer layer for even better filter and protection results Low exhalation resistance for comfortable wearing Higher resistance to liquids and aerosols (type IIR) Non-sterile, lint-free, skin-friendly Integrated nose clip, anatomically and individually easy to shape Packaged in a practical dispenser box of 50 pieces