High-performance boot that is still comfortable, designed for mid-sized to slender feet. Tri-force chassis together with blown out zones around ankles gives maximum precision. Heat-mouldable performance fit liner for maximum adaptation to your foot. Heat ready: designed to take cables and warming footbed. 35mm Velcro power driver (with elastomere section) for soft, progressive force on the shin. Adjustable flex (110 or 120). 4 aluminium micro-buckles + 2 servo locks.