- Activated carbon Filter
- Disposable replacement Filters
- Five Layer Protection
- The filter is disposable. It is recommended to replace it and the recommended use time is 3-4 days.
These masks are so comfortable and fit really well. The elastic doesn't hurt your ears and I believe it was a great purchase given the price as well.
These are hands down my husband’s favorite masks. Well made, nice color selection, and stand up well to use and washing.