Built for speed. A full Flyknit upper wraps all the way around your foot for a second-skin-like fit. A shorter Dynamic Fit Collar offers a seamless fit, while not being restrictive. Zonal NikeSkin coating on the Flyknit upper enhances touch at high speeds. A rubber outsole features tri-star flex grooves for natural movement from your foot and supreme traction on courts and streets. WEIGHT: 9.0 oz.