3M™ Speedglas™ Supplied air (SA) respiratory system. Includes V-100 Vortex air-cooling valve, belt, breathing tube, and complete 9100 FX-Air helmet assembly including 9100 XXi Auto Darkening Filter (ADF). Flip front welding shield allows for a clear, wide-view protective visor for grinding and setup. Lightweight valve can lower temperature of air entering headpiece by up to 50°F (28°C).