Recommended for welding where ozone and nuisance level organic vapors may be present. 3M™ Cool Flow™ Exhalation Valve is a patented one-way valve offering easy exhalation for cool, dry comfort Cake-resistant filter media Lightweight construction promotes greater worker comfort. All filter design provides economical protection, maintenance free, promotes easier communication, and has a flame resistant outer shell. Buckle adjustable straps provide a comfortable, secure fit with a single tug. Adjustable noseclip provides a custom fit, secure seal, and reduces the potential for eyewear fogging. Welding web is a unique filter media and protective layers are designed to be flame resistant as demonstrated per ASTM D2859.96. (Not a substitute for a faceshield) Faceseal is comfortable to wear and contours easily to help provide a good seal. Testing and Approvals: Meets NIOSH 42 CFR 84 N95 requirements. TC-84A-0454