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Controversial Nike Vaporfly shoes worn by Kipchoge for fastest-ever marathon to be BANNED due to super springy soles – The US Sun | The US Sun
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Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
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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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