Description of Nordica GP T3 Super Ski Boots - Junior Features: Shell and cuff material: polyolefin Liner: gp t3 super Flex index: 40 Buckles: pc junior, lift up Velcro strap: twin energy driver (by Booster), 45 mm Wedge: full shock eraser Rear spolier: height adjustable Size range: 21.0-23.5 mp