The PM2.5 mask soft with moisture filter, adds a comfortable feel to the usual protection the face mask offers in dust, smog and haze polluted areas. Tiny particles smaller than 2.5 micrometers in diameter, which is about 3% the diameter of a human hair, are blocked out. These masks are used for traveling, hiking, or when visiting polluted areas. The best mask to prevent air pollution are PM2.5 face masks.
Mask - 1pcs