The 3M Filtering Barrier Face Covering is a barrier face covering that can also help reduce airborne particulate exposure, when used as instructed. It can be used in crowded places, airplanes or everyday moments to help filter airborne particles. Per ASTM F3502-21 Standard for Barrier Face Coverings; Not a NIOSH approved respirator.The 3M Filtering Barrier Face Covering is a barrier face covering that can also help reduce airborne particulate exposure, when used as instructed. It can be used in crowded places, airplanes or everyday moments to help filter airborne particles*. *Per ASTM F3502-21 Standard for Barrier Face Coverings; Not a NIOSH approved respirator.