The Defend 99 face mask is made of comfortable and soft fabric for prolonged use with easy breathing. The high filtration face mask is certified by TUV Rheinland, and the unique AZI Guard technology helps kill viruses and bacterial particles when air passes through the mask layers. It has a nose clip that is adjustable which prevents the eye-wear fogging.
The mask provides 99.3% BFE Bacterial filtration efficiency (>3µm) and 97.5% PFE Particle Filtration Efficiency (>0.3Um). The mask has three-layer protection: