Conquer mid-distance races by wearing the Nike Zoom Rival MD 7 track spike.．Made with lightweight mesh and synthetic leather, the Rival MD 7's upper keeps your feet light, cool, and dry. ．Dynamic midfoot bands lock the foot down, ensuring a secure fit so you can focus on speed. ．Responsive Phylon™ heel provides excellent protection against heel impact as the forefoot Pebax® plate delivers race-winning traction. ．Includes 1/4" pyramid spikes and a wrench. ．Wt. 5.8 oz.