Harness your power with the Reebok JJI Trainer. Through an intimate collaboration with the hardest working player in the game, the JJI was custom engineered for comfort, agility, and a style that shows the world you are ready to Hunt Greatness. With advanced features, like liquid foam cushioning, multi-directional traction, and a flexcage integrated lacing system, there’s no denying the power of the JJI Trainer.