Feel the power in the Rossignol X-IUM World Cup Skating Boots. The race-proven design features our low-profile, skate-specific sole for a precise feel and effective power transfer. The full carbon cuff and heel counter maintain lightweight stability for an efficient podium-bound stride. The locked-in feel and thermomoldable design provide a precise, enveloped fit to deliver ultimate comfort and control. Carbon Reinforced Lateral Carbon Edge runs from heel to midfoot for precise ski control Optimized Skate Flex Carbon midsole insert provides increased stability and precision for optimized skating performance Stability, Power Transmission Carbon Injected Cuff is shaped to match the natural shape of the foot for maximum stability and power transmission Enhanced Power and Control An Asymmetric Support system creates even distribution of forces for increased efficiency, power and ski control Customizable Fit, Comfort Thermoadjustable liners can be heat-molded around your feet for a customiz