3M 8212 N95 Disposable Welding Respirator with Cool Flow Valve forceflex cut vs impact gloves Style:Non Vented (22507) cut vs impact gloves The full zip means you pull it on over a hard hat and safety glasses Specification Detail Brand 3M Model 8212 NIOSH Class N95 Exhalation Valve Yes — exhalation valve Nuisance Relief None Shell Shape Cup Headstraps Dual elastic Pack Size 10 Pack built with a structured polypropylene cup that resists spark impingement and a low profile design to fit under standard auto darkening welding helmets — while the Cool Flow exhalation valve routes hot humid exhaled air out of the mask to keep your visor clear during sustained arc work