Nanotechnology Masks

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

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