Description

Functionally, the LeBron 21 “Optimism” is engineered for performance. It features a Phylon midsole equipped with Zoom Air units in both the forefoot and heel, providing responsive cushioning. A TPU shank plate offers midfoot support, enhancing stability during play . The upper is constructed with a 360-degree zonal cabling system, inspired by the ridges of an oyster shell, symbolizing LeBron’s protective nature towards his daughter. This design not only adds a unique visual element but also contributes to the shoe’s structural integrity .