Disposable Respirator, 2800 Series, N95, Medium/Large. Can be used against most welding fumes (free of oil). Added carbon layer helps filter out nuisance ozone and organic vapors. HandyStrap® with buckle, allows mask to hang down around the user’s neck when not in use. Ventex® valve lets the hot air out fast so workers breath easier and stay cool. Soft foam nose cushion for added comfort and no pressure points. Exclusive Dura-Mesh® shell resists collapsing in heat and humidity. Meets heat and flame resistance in accordance with ANSI/ISEA 110-2003 Section 7.11. 100% PVC-Free®.