Pack of 10 Activated carbon filters for reusable masks.
The replaceable activated carbon filter can isolate up to 99% of dust, which is suitable for protecting your mouth and face from dust, haze, allergies, smoke, pollution, ash, pollen, hazardous chemicals, heavy metal particles, etc.
Five Layer Protection: 1st layer of spunbound cloth filters micron-level dust. 2nd layer filters industrial pollutants, automobile exhaust, passive smoking, and pollen allergens. 3rd layer of active carbon cloth filters micron-level dust. 4th layer offers filter density for smaller material. 5th layer of spunbound cloth filters out all kinds of harmful substances.