Experience World Cup control.Elite-level precision is all yours with the podium-proven X-IUM Carbon Premium Classic Course Ski Boots.Designed for competitive athletes, an integrated carbon chassis supports the foot with an open heel counter for a precise fit and responsive ski control.The fit is designed to match the natural shape of the foot for world-class comfort and precise power transfer to the ski.An updated lace cover enhances weather resistance to keep feet warm and dry.Ultralight, Powerful.Integrated Carbon Chassis offers best-possible stability and power transmission .Optimized Classic Flex.Our Full Carbon Classic Sole is tuned for improved foot roll and enhanced kick for classic skiing .Precise Control.Carbon Heel Counter provides increased rigidity and precise control.Quick, Easy Closure.Speed Lace Lock system offers fast, easy closure for increased support.Custom-Fit Comfort.Thermo-moldable liner offers easy customization and personalized comfort