Experience elite, world-cup-level control in the podium-proven Rossignol X-IUM Carbon Premium Classic Ski Boots. Designed for competitive athletes, their innovative construction features carbon support along the sides of the foot with an open heel counter for a precise fit to match aggressive skiing. The fit is designed to accommodate a variety of foot shapes for world-class comfort, warmth and unmatched power transfer to the ski. Our Expert Classic Sole is tuned for improved foot roll and enhanced kick for classic skiing Speed Lace Lock system offers fast, easy closure for increased support Thermoadjustable 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 Heel: New lateral carbon edge Sole: Expert classic Materials Lining: Polyester thermo adjustable fit Construction lower: Premium PVC Weight 780 g/pair (size 42)