Narrow Fit: Narrow Fit features a 97mm last for a race-inspired fit with a contoured forefoot and strong heel cup for a superb balance of performance, control, and comfort Better Skiability, Better Fit: Dual Core shell technology provides targeted power transmission and shell wrapping, resulting in livelier rebound, response, and control Short Cuff Design: A shorter upper cuff provides a more natural stance for skiers with shorter legs to increase balance, comfort, and performance Racing Precision: Racing liners feature anatomic high-density foam padding for optimized precision and performance Flex: 70 Last: 97mm Race-inspired power for juniors. The Hero World Cup 70 SC is a high-performance race boot for competitive junior racers. It features a softer 70 flex rating. The 97mm last provides increased comfort, circulation and warmth while still maintaining a performance fit. A short cuff design accommodates a natural stance and range of motion for smaller athletes, further increasing comfort and performance. Rossignol Youth Hero World Cup 70 SC Boot