NIOSH certified to have a filter efficiency of 95% or greater for non-oil based particulates. Workers stay cooler with an exhale valve that reduces hot air build up. There’s less breathing resistance and workers don’t have to break midshift to cool off. The exclusive Dura-Mesh® shell protects the filter media so it stays cleaner-looking longer. The shell resists collapsing, even in heat and humidity so the respirator holds its shape longer. The result is fewer respirators used and lower costs. The molded nosebridge with soft foam nose cushion provides the wearer an easy, comfortable fit. There’s no metal noseband to adjust and the seal is maintained without pressure points. Low Profile Shape.