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Nike's high-tech Vaporfly sneakers help athletes run 4 percent faster. Should they be banned for providing an unfair advantage? - Vox
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Nike ZoomX Vaporfly Next% 2 | Breaking 2 "Monza" Colorway 5/20/2021 – Heartbreak Hill Running Company
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Nike says Bekele wasn't wearing Breaking2 project shoes in London Marathon 2017. – Athletics World News
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