Designed for 800m- to 5000m races, the Nike Zoom Rival D 8 delivers enough support and speed to help you finish first. This lightweight, versatile track spike has a single-layer mesh upper and midfoot overlays that support the foot and promise an exceptional fit. Compression-molded Phylon™ midsole provides enough responsive cushioning to ensure a smooth mid-distance run. The 3/4-length rubber outsole and six-spiked Pebax® plate promise reliable traction. Includes 7mm spikes and a wrench. Wt. 6.4 oz.