The perfect add-on to your mask. Comes in a sealed 5-piece pack.
This filter is a PM2.5 (2.5 micron, particulate matter) made of activated carbon and non-woven melt-blown filter cloth, the five-layer filter system effectively keep away from a range of airborne contaminants.
- First layer of spunbond cloth filters micron-level dust;
- Second layer filters industrial pollutants, automobile exhaust, second-hand smoke, and pollen allergens.
- Third layer of activated carbon cloth filters micron-level dust;
- Fourth layer offers filter density for smaller material.
- Fifth layer of spunbond cloth filters out all kinds of harmful substances.
*Replace the filter after one week of use, when any physical damage occurs to the filter, or anytime the filter becomes damp or moist.