Mask Filter PM2.5 Activated Carbon Filters - 5 Layers || 10 x PM2.5 filters/bag
Product Description: 10x PM2.5 filter/Bag
Five Layer Protection: 1st layer of spunbond cloth filters micron-level dust. 2nd layer filters industrial pollutants, automobile exhaust, passive pollen allergens. 3rd layer of active carbon cloth filters micron-level dust. 4th layer offers filter density for smaller material. 5th layer of spunbond cloth filters out all kinds of harmful substances.