The Nike ZoomX Dragonfly is designed and built for races from 1,500 to 10,000 meters, with features that will push you onwards to a new PB ZoomX foam in the midsole is both lightweight and responsive, delivering optimal energy return and absorbing impacts with every footfall, mile after mile. A breathable upper supports you and helps keep your foot cool and comfortable. The ridged forefoot plate was designed with data from hundreds of runners, ensuring a smooth transition from to-to-heel.