FlexView system allows the welding filter to be flipped up for grinding. Pivot mechanism nests helmet over hard hat when raised. Two shade 5 side filters increase peripheral viewing. Large auto-darkening filter with shades 9, 10, 11, 12 and 13. Benefits ProTop special pivot that allows the welding shield to “nest” down on a hard hat for better balance. Clear 4.75 in x 3.6 in (120 mm x 90 mm) faceshield SideWindows increase peripheral vision by over 100% Four-position sensitivity control Adjustable recovery delay