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Cathal Dennehy on Twitter: "Get set for the Vaporfly debate to hit sprinting...the Nike prototype spike that could change the game in 2020. https://t.co/0oyIw8Kdib" / Twitter
Nike prototype sprinting spike could be a 2020 game changer - Canadian Running Magazine
Nike ZoomX Dragonfly Bowerman Track Club Track & Field Distance Spikes. Nike .com
Meet the American who designed the modern sneaker and co-founded Nike: Oregon track coach Bill Bowerman