NIOSH APPROVED 10PCS N95 standard dust mask efficiently filters 95% of airborne particles free of oil, protection against fine dust, solid and liquid particles, against pm 2.5 air pollution, smog, smoke, suitable for home and professional use, indoor or outdoor use RELIABLE PROTECTION Respirator mask filter out pollen, pet hair and dander, mold spores, leaves, grass clippings, flour, iron ...