With a lightweight, breathable upper and cushioned midsole, this adaptable spike dials you in for a wide range of middle- and long-distance races. It takes learnings from the game-changing Dragonfly spike to give you efficient energy return for the tough middle laps and top-end speed as you kick into the homestretch. SIZING: Men's sizes shown. If shopping for a Women's size be sure to make the appropriate conversion before purchasing.