NIOSH certified to have a filter efficiency of 95% or greater for non-oil based particulates. The Dura-Mesh® shell, exclusive to Moldex®, 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 nose bridge 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. Small.