3M Speedglas supplied air (SA) respiratory system. Includes V-100 Vortex air cooling valve, belt, breathing tube and complete 9100 MP helmet assembly and 9100 XXi ADF. Includes wide view protective visor for grinding and setup. Lightweight valve can lower temperature of air entering headpiece by up to 50 deg F (28 deg C). Meets ANSI Z89.1-2009 requirements for type 1 class G hardhats. Designed for hot, strenuous jobs. The 3M Speedglas welding helmet 9100 MP features flip-up assembly for grinding and prep work. Side windows - shade 5 side filters that increase peripheral vision. Ergonomic, adjustable head suspension for increased comfort, helmet stability and weight distribution. Auto darkening filter 9100 XXi - compatible with 3M Speedglas auto darkening filters 9100V/9100X/9100XX/9100XXi. Selectable shades 5, 8 to 13 and shade 3 light state, grinding and tack modes. For use with all Stick, MIG and TIG welding processes. 5-position sensitivity control. Adjustable recovery delay. Offers assigned protection factor (APF) of 25 when used as a NIOSH approved system. Meets ANSI Z87.1-2010. earmuff protection available as optional accessory. Storage bag, welding cap and starter kit included.