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
They're fine, I'm glad to have had a chance to purchase them. If you plan to discontinue them, please make it known far and wide.
All is well. Good product, good service. Thank you,
Wonderful, they great. I feel protected. Thank you .
I wanted to make sure my masks were protecting me the way they should. Having these filters for my masks are effective for my peace of mind.