The removable filter slips inside the mask in a pocket provided for this purpose. Position it well on the top of the mask facing the nose and mouth

It is reusable for up to 15 days depending on air pollution conditions before having to change.

Filtration of particles down to 2.5 microns via 5 filtration layers including one with activated carbon and one with microfibers to stop the finest particles.

Please note, these filters are not compatible with Biker masks with valves or Frogmask