Gejoy Mask Filter Sheet for Cycling Dust Prevention Mask, Activated Carbon Filtration Air Filter for Outdoor Activities (14 Pieces)

Key features

• Material: made of activated carbon and breathable fiber cloth, outside using non-woven fabrics, can isolate the dust, chemicals, particulates, gas, pollen and fumes
• Good design: according to the person face design, good permeability, air resistance is smaller, smooth breathing
• Easy to use: suitable for install in general double air breathing valve activated carbon dust mask, can be replaced at will (Notice: package not include masks and valves)
• Package includes: 14 x filter cotton sheets, enough quantity for you to use for a long time, usually recommend replacing the filter once a week
• Applications: filter cotton sheet can use with mask for anti-dust, anti-vehicle exhaust, anti PM2.5 and haze day protection; Helpful for cycling, running, biking, hiking, skiing and other outdoor activities