Description of Nordica GP TJ Ski Boots - Junior No matter what age your skier, Nordica Junior boot collection has a boot that will grow with your child and be a comfortable easy boot to use. Comes in both boys and girls colors. Features: shell and cuff material: Polyolefi n flex index: 40 (19.5 – 22.5); 45 (23 – 26.5) liner: GP TJ buckles: PC Junior, lift-up size range: MP 19.5- 26.5