These masks are manufactured in FDA & CE certified factories and are approved to provide protection against harmful airborne matter based on the KN95 specifications. Serve to provide protection of face from your mouth to the nose from harmful pollutants in the air. It can be used to effectively filter out droplets, dust, bacteria, virus, and other non-oily PM2.5 air particles at least to 95%. It efficiently features nose wire to ensure fit around your face contour and nose that helps prevents glasses from fogging. When properly used, this mask can help to reduce exposure to harmful airborne particles. This KN95 filtration performance is equivalent to N95.