About 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