Nanotechnology Masks

4C Air has collaborated with AireTrust to develop that use our patented nanotechnology developed at Stanford University. These nano masks provide up to 99% filtration efficiency with exceptional breathability. Our adult nano masks are KN95 certifiedĀ  >95% protection against the most dangerous 300 nm/0.3 Ī¼m particles, much smaller than PM2.5 or germs.

The AireTrust mask is ideal for use in areas with poor air quality or where airborne hazards arise.