Experience elite, world-class control in the podium-proven Rossignol X-IUM Carbon Premium Classic Ski Boot. Designed for competitive athletes, its innovative construction incorporates carbon support along the sides of the foot with an open heel counter for a precise fit for aggressive skiing. The fit is designed to adapt to a variety of foot shapes for world-class comfort, warmth, and unparalleled power transfer to the ski. The Expert Classic sole is optimized for improved foot roll and better rebound during classic skating. The Speed Lace Lock system offers quick and easy closure for greater support. The thermo-regulated insole can be thermoformed around your feet for a personalized fit and comfort.