A lightweight breathable upper actively cools. Light yet strong support: Hot melt TPU overlays. Greater air flow to keep cool: open cell mesh upper. TPU quarter frame: added stability and flexibility. Abrasion resistant toe and heel pieces: added durability. Added protection and durability: reinforced toe box. Quickly secure foot for ideal fit: speed lacing system. Actively pulls moisture away from foot: moisture wicking lining. Shock absorption and rebound for all day comfort: strobel foam construction. Contoured to the foot for flexible movement: removable molded EVA footbed. Fights fatigue by engaging arch: molded full length arch support. Locks heel into place: molded heel cup. Wider base for increased stability: dynamic EVA wedge midsole. Perfect balance of grip and durability: rubber outsole. Lateral response and movement: directional outsole lugs. Better response to the ground: 4mm heel to toe drop.