Nike ZoomX Dragonfly XC Cross Country Spikes Unisex Men to Women Sizing 7 Men = 8.5 Women For trailblazers and tenacious finishers, the Dragonfly defies elements. Our swiftest distance spike, it's track-tested and off-road-ready, having proven itself globally. ZoomX foam boosts energy return, while a broader base ensures stability in challenging conditions.