Genus G99 Reusable Face Masks are treated with Swiss technology Anti Viral and Anti Bacterial. It is a special combination of advanced silver & vesicle technology that has been proven effective against microbes like virus, bacteria etc. It has Particle Filtration Efficiency, that helps filter more than 97% of the particles at 0.3 microns (which is 95% for N95) as per the test method ASTM F2299/F2299M-03 (2010) & Bacteria Filtration Efficiency, that helps filter more than 99% of the bacteria (which is 95% for N95) as per the test method ASTM F 2101. Amazing Breathability: The masks provide great breathability. The mask provides utmost comfort to the wearer even after wearing for long duration. Its unique ergonomics allows you Top notch comfort & protection with Style. The super soft and fabric Earloops ensures that there is no discomfort behind ears even after wearing for long duration unlike other masks with Elastic earloops which cause pain and bruises on Ears.