NIKE Women's Zoom Rival S 7 Track Spike Synthetic Dynamic Fit technology wraps the arch for a glove-like feel. Solid rubber through the heel enhances grip and durability. Lightweight mesh in the upper and tongue provides airflow. Pebax plate with 7 spike receptacles for maximum power, speed and traction. Spike plate extends to the midfoot for torsional rigidity and to support forward propulsion.