Feature: Active carbon filters,separation of 99% of the dust, chemicals, particulates, gas, pollen, smoke and fumes.The dustproof mask can be used for anti-dust, anti-vehicle exhaust, anti-pollen allergy, anti PM2.5 and haze day protection. It is suitable for cycling, running, biking, hiking, skiing,woodworking and other outdoor activitie.Compatible with majority of Dust Masks available in the market Packing Contents: 12 * Extra activated carbon filter
