The new HERO WORLD CUP SI ZJ+ is the real-deal, elite-level race boot for Olympic heroes, World Cup athletes, and competitive alpine racers. Featuring a 92+ mm more tolerant new last plug shell with extra-thick walls, and race hinged design, competitive athletes get the most efficient power transmission available in skiing. The mono-injected shell makes customization easy and offers an efficient neutral and upright stance. An ultra-thin cork-flo lace-up liner provides an exact fit for unprecedented precision and performance. The HERO WC ZJ+ is the true race boot used by World Cup athletes.