Features:
- Breath valve design, The same position alternates twice, it reduces heat and effectively relieves the suffocating feelings
- After inserting the PM2.5 filter core to the mask, you could be protected from dust, small particles on-air, pollen and more
- Adjustable nose clip to make the mask get fit with the face so that the sealing effect is better, and the user wearing the glasses can effectively reduce the fogging after adjustment
- Unisex, suitable for indoor or outdoor wear. One size fits most people

Note:
1. The shape and color of breath valve will be sent randomly
2. The mask shell can be washed, it is usually recommended to wash it by hand every 1 - 2 weeks
3. Plug-in filter can not be cleaned, it is usually replaced once every 7 - 10 days. If air pollution is serious, replace it once every 3 - 5days