The Speedglas 9100X with sidewindows, shades 8-13, sensitivity adjustment allows use with all Stick, MIG and TIG processes, also has grinding and torch modes. New headgear makes this helmet extremely comfortable and versatile. Viewing area 9.12 sq in. Benefits 2.1 x 4.2 in. viewing area New comfortable headgear Sensitivity adjustment that allows use with all Stick, MIG and TIG welding processes, with grinding and torch modes. SideWindows increase peripheral vision by over 100%