1. The replaceable activated carbon filter can isolate up to 99% of dust, which is very suitable for protecting your mouth and face from dust, haze, allergies, smoke, pollution, ash, pollen, hazardous chemicals, heavy metal particles, etc.
2. Five layers of protection: the first layer of spunbond filters micron-level dust; the second layer filters industrial pollutants, automobile exhaust, second-hand smoke and pollen allergens; the third layer of activated carbon cloth filters micron-level dust; the fourth layer has a more dense filter High, suitable for smaller materials. The fifth layer of spunbond can filter out various harmful substances.