By simply tightening the BOA® Fit System, your shoe and the binding become one. Your heel is freed of any pressure point. The heel lift, which is under the heel whatever the shoe size, avoids any punching effect. All this for 150 g less than for a pair of traditional bindings. Suitable for experienced hikers looking for technicality, grip and comfort.  Front grip Lateral grips Crampons Rocker Structured frame Contact grips Flexible bindings Lock Adjustment  BOA Fit System  Sound and Shock Absorbing System (SSAS) Easy Ascent SSAS Heel lift, activated by simply pushing with the pole