P95 and N95 are rating classifiers for masks manufactured to keep people from inhaling dust and other small particles in unsafe environments.

KF94 masks are Korean-standard masks tested and regulated by the Korean Ministry of Food and Drug Safety, said Kelly Carothers, the director of government affairs and sustainability at Project N95, ...

Experts have made it clear: Cloth masks are no longer good enough as the omicron coronavirus variant spreads. Instead, they recommend upgrading to a KN95 or N95 mask as they offer better protection ...