Moldex 2315 N99 Welding Particulate Respirator with Dura-Mesh shell, exhalation valve and adjustable straps. Naturally contoured facepiece has no pressure points Molded nose bridge provides easy comfortable fit. The Dura-Mesh shell, exclusive to Moldex, protects the filter mediaso it stays cleaner, longer. Exhalation valve reduces hot air build up. Soft foam nose seal for comfort. Use against aerosols free of oil.N99 Welding Particulate Respirator 10 ea/bx