Line Control Technology (LCT): LCT technology eliminates reverse camber flex providing better snow contact and stability in turns. Race-ready construction for a balance of total control of your line, power and precision to win races. The Hero Athlete SL Pro is a competition-level SL race ski designed specifically for U10 to U16 junior racers. The sizes, constructions and flexes meet the needs of future developing Heros. Flexes and balance have been developed by size to best match the growing junior athlete. Rossignol Youth Hero Athlete SL Pro R21 Ski