The JB4, Jimmy Butler’s fourth signature shoe with Li-Ning, is built around resilience, control, and quiet dominance.
At its core, the JB4 introduces an advanced 3D upper construction wrapped with three integrated IBR components. This air-injected lightweight rubber system delivers a precise balance of fit, flexibility, and dynamic support, allowing the shoe to move naturally with the foot while maintaining lockdown under pressure. The result is a lighter, more adaptive feel with enhanced 3D foot wrap - resilience as a built-in advantage.