Respirators feature the Moldex® Dura-Mesh® shell, which resists collapsing in heat and humidity. It has a molded nose bridge that seals easily without a metal nose band. The naturally contoured facepiece and Softspun® lining give the respirator added comfort and durability, as well as relief from pressure points. NIOSH certified to have filter efficiency level of 95% or greater against particulate aerosols free of oil. The respirators are available with the Moldex HandyStrap® with buckle that allows the mask to hang down around the user's neck when not in use and they are available with a Ventex® valve which lets the hot air out faster so workers stay cooler, or available with an added carbon layer to help filter out nuisance levels of ozone and organic vapors (less than OSHA PEL). Low-profile NIOSH bridge fits rounder facial features and flatter nose bridges.