The Filters makes by the filter machine.
- DOUBLE FILTERING DESIGN - Air valve helps filter air, and then allows air to only enter through replaceable filter to keep particles out.
- EASY WEAR - The adjustable straps and nose bridge support make this an easy to wear mask at all times without sacrificing quality or filtering capacities.
- FILTERS INCLUDED - Each mask comes with TWO high quality PM2.5 filters; 4 times layered made from non-woven fabric and active carbon.