Reach your personal best on the track with the Nike ZoomX Dragonfly. Its lightweight, fast design is made for 1,500 to 10,000 metre races. Fast, Efficient Energy Return Nike ZoomX foam is incredibly responsive and lightweight, delivering optimal energy return and impact protection for your miles Light and Race-Ready A lightweight mesh upper provides breathability and support made to go the distance. Ridged Design The forefoot plate was created using data from hundreds of runners. It helps ensure a smooth transition from toe-off to heelstrike.