- The mask can be used for more than 2 years, and the filter is recommended to be replaced every 30 days.
- If in haze area, depending on the situation (the filter becomes black or damaged, please replace it in time）
- The mask material is made of diving cloth, a little smell is normal, you can remove the filter first,
- To prevent smell, Soak in warm water for 15 minutes, the smell will slowly disappear, the principle of filter activated carbon cannot be washed.
- Included one mask filter, attachable, thick and comfortable.
