A step ahead? Nike's Vaporfly shoe changing marathon game | The Seattle Times
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It's Official: Nike's Vaporfly Shoe Technology and World Athletics' Shoe Rules Have Ruined The Marathon (At Least Temporarily) - LetsRun.com
Heidi Burgett on Twitter: "Nike unveils the Nike Air Zoom Mercurial (w/ Flyprint upper), Nike Air Zoom BB NXT (available July 1), Nike Air Zoom Viperfly, and Nike Air Zoom Alphafly NEXT%.
Can Nike's AIR ZOOM VIPERFLY Break Usain Bolt's 100 and 200 Meter World Records? - YouTube