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London, UK. 20 October 2020. A staff member views the "Nike Zoom X Vaporfly NEXT%" running shoes by designers at Nike Sport Research, as worn by Eliud Kipchoge to break the two
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Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics | BBC Science Focus Magazine
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London, UK. 17 May 2021. "Nike Air Zoom Alphafly NEXT%", 2020, and "Nike ZoomX Vaporfly NEXT%", 2019. Eliud Kipchoge wore prototype Alphafly to run a marathon distance in under two hours. Preview
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Nike stirs the pot with 'gamechanger' running shoe in step with new rules | Athletics | The Guardian
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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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Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
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