100pcs PM2.5 Activated Carbon Filter Replaceable Anti Haze Filter Paper(5 Layers)

It is recommended to replace the filter after using it for at most one day to achieve the best results. Easy to use: just put it into the PM2.5 filter opening. 1. The filter element cannot be cleaned and should be replaced once a day. 2. When there is film or sticky sediment stains, please replace the filter. Safety protection: Ideal to protect your mouth and face from dust, haze, allergies, pollution, ash, pollen, gardening, handicrafts, PM2.5, car exhaust, wood products, pollen allergies and smoke. High-quality materials: made of activated carbon and no Made of woven meltblown filter cloth, the five-layer filter system effectively prevents PM2.5 and a series of airborne pollutants