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Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
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Eliud Kipchoge's footwear sparks debate as critics say the shoes give runners an 'unfair advantage' | Daily Mail Online
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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 Vaporfly running shoe which helped break Paula Radcliffe's record set to be BANNED | Daily Mail Online
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