The G20 is a new generation of technical crampon bringing together 190 years of Grivel’s experience, the most advanced R&D. This is a crampon for the hardest mixed and the steepest ice where lightness and sensitivity are paramount and at 794g it is the lightest technical crampon in the world! Patented Mono Rail technology in hot drop forged Chromolly steel gives asymmetric left and right mono front points. Rear facing points on the footplate give greater security when hooking ice features or back stepping. Easy adjustment, macro with tools and micro tool free, give a size range of 37 to 47.