Lightweight, knit upper provides containment and allows for natural movement. Webbing lace system for locks the foot down. Full-length internal bootie construction provides the ideal, one-to-one fit. Synthetic overlay is bonded to the upper to enhance durability. Lightweight Injected Phylon foam provides plush cushioning and a smooth, stable ride. Zoom Air units in the forefoot and heel provide responsive cushioning all game long. A solid rubber outsole with multidirectional traction pattern grips the court to prevent slipping.