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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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Controversial Nike Vaporfly shoes worn by Kipchoge for fastest-ever marathon to be BANNED due to super springy soles – The Sun | The Sun
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Nike Vaporflys: World Athletics set to clamp down on 'technological doping' | The Independent | The Independent
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Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
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