PM2.5 Activated Carbon Filters with five layers of filter design can isolate up to 99.5% of dust, pollen, hazardous chemicals, fumes, heavy metal particles, etc. This replaceable filter is breathable comfort, which will help keep the mask clean and extend the using time.

Application: At home, outdoor, hospitals, restaurants, on hazy days, or in the dusty air. Non-medical use.
*This product cannot be returned or exchanged.