The Nike ZoomX Streakfly is a fast shoe made for runners who want the best from their training and competitions. The ZoomX Streakfly comes into its own for races of 5 to 10 km and for interval and tempo training. Accelerate to victory with this competition shoe, designed for top performance during every race! Midsole The use of Nike ZoomX foam in this shoe ensures optimal energy return: every step you take provides energy for the next. Nike ZoomX has an energy return of 85%, so you feel propelled while running. It is also lighter and softer than any other Nike foam. Upper Designed with a knitted upper, the shoe is seamless and can stretch with your foot. The knitted upper has high breathability, keeping your feet cool during every run. The streamlined lacing system, combined with the notched tongue, reduces pressure on the top of your foot. Outsole The rubber outsole of the shoe provides good grip and traction while running. Experience the perfect balance between speed, comfort and durability with the Nike ZoomX Streakfly on your feet.