The Nike Zoom PV II has been designed for both practice and competition. Lightweight stretch innersleeve adds Dynamic-Fit and comfort. Midfoot support strap provides adjustable fit. Engineered with a broad and relatively flat bottom. The 8mm heel-to-toe offset enhances transition for the upright running style. Five removable pins are placed in key zones of the extended spike plate. Comes with 9mm Christmas Tree spikes and a wrench. Wt. 8.4 oz.