Elite, world-cup-level precision is all yours with the podium-proven Rossignol X-IUM Carbon Premium Skating Ski Boots. Designed for competitive athletes, their innovative design features a full carbon sole and heel counter plus a carbon cuff for an ultra-lightweight feel and responsive power delivery. The fit is designed to accommodate a variety of foot shapes for world-class comfort, warmth and precise power transfer to the ski. Carbon Cuff is shaped to match the natural shape of the foot for maximum stability and power transmission Full carbon sole maximizes efficiency for total energy transfer and precise control Carbon Heel Counter provides increased rigidity and precise control Full-height lace cover enhances waterproof coverage for dry feet Speed Lace Lock System offers fast, easy closure for increased support Thermo-adjustable liners can be heat-molded around your feet for a customized fit and comfort Technical features Lacing system: Speed lace lock Lace cover: PVC Racing Const