- The pack contains a cotton mask and four PM2.5 filters.
- Pick out one filter and insert it in the pocket of the cotton mask.
- Each filter has life of upto 100 hours.
- When the cotton mask gets dirty, wash the mask, without the filter.
- Filter cannot be washed.
- When the filter is used up, replace it with a new one and four filters provide the convenience of replacing filters easily.
- The mask must be worn in an outdoor environment only and should be avoided in the indoor environment.