Replacement carbon activated filters for face coverings.
 
Five Layer Protection:
 
1st layer of spunbond cloth filters micron-level dust.
2nd layer filters pollutants, car 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 spunbond cloth filters out all kinds of harmful air pollution.