Nike's controversial Vaporfly shoes are helping runners set new records, but some think it's 'technology doping.' Here's how they work. | Business Insider India
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IAAF steps up investigation into fears over springs in Nike running shoes | Athletics | The Guardian
Nike's controversial Vaporfly shoes are helping runners set new records, but some think it's 'technology doping.' Here's how they work. | Business Insider India
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ROME, ITALY, JUNE 23. 2020: Nike running shoes ALPHAFLY NEXT%. Controversial green, black athletics marathon shoe. Detail on Air Zoomx foam, Air zoom Stock Photo - Alamy
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