Our Filters

The replaceable nano-fiber filter inserts that are compatible with our masks consist of a layer of a nano-fiber.

The nano-fiber is made of world-leading material that consist of ultra-thin fibers, about 1000 times thinner than a human hair. These fibers form a spiderweb-like membrane that captures tiny particles.

This material is made in the USA.

Our nano-fiber filter features:

  • 95% Filter Efficiency at PM0.3
  • Testing at eSpin Technologies Labs in Chattanooga, TN.
  • Test conditions:
  • Flow: 32.2 liters/min, Resistance: 31.9 mm H20, Penetration 4.76% •
  • Mean particle size (MPS) 0.3 ± 0.3 μm