These carbon filter for face masks are made of quality carbon activated filters, non-woven and melt-blown polypropylene filter that can effectively filter out 99% of exhaust, pollen, smoke and dust. The filter is disposable. It is recommended to replace it and the recommended use time is 3-4 days. The 5-Layer Protection contains:
- Non-woven polypropylene filter to protect against micron-level dust
- Meltblown polypropylene filter layer
- Activated Carbon filter layer to prevent haze, industrial emissions, vehicle exhaust, etc.
- Non-woven cloth filter to protect against the density for smaller material
- A layer of soft cloth
1-6-22. did call cust serv. ques re: which side to face! guess figured that lettering PM2.5 goes
in upper left corner, using two-face tape in
order to keep from shifting around while using cloth mask! someone said KN 95
masks more effective!
Easy to use and comfy
Thank you for a great product I will be ordering more product thank you and stay safe be careful God bless you and family