Designed for speed training and winning races, this lightweight running shoe sits on propulsive Zoom Air cushioning that turns every stride into forward energy. It's built for performance from the ground up with grippy, multidirectional tread patterns delivering reliable, multi-surface traction under an aerodynamically sculpted sole that swoops along the sides and tapers to a neat, shock-absorbing keel in the back. An internal sock keeps your foot comfortably secured inside the ripstop translucent shell that fuses sleek looks with miles of unfair advantages.