25 PCS PM 2.5 Activated Carbon Mask Filters (Adult Size)
- 25 Replaceable PM 2.5 face mask filters
- 5 layer activated carbon inserts
- Fits adult/teen sized masks ONLY - These will not fit kid-sized masks
- Ships from Massachusetts
These work well keeping droplets in. The whole family uses them (we also got the child's size). It's nice to feel an extra layer of protection. I sanitize in a UV sanitizer after every use and change at the first signs of wear.