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 provides the wearer an easy comfortable fit. There’s no metal noseband to adjust, and the seal is maintained without pressure points. The Softspun® lining is soft to the touch, which means workers won’t mind wearing it for an entire shift. N99 for a higher level of protection. NIOSH certified to have a filter efficiency of 99% or greater against particulate aerosols free of oil. Suitable for most welding applications. Meets heat and flame resistance in accordance with ANSI/ISEA 110-2003 Section 7.11.1.