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Darren Rovell on Twitter: "“When a shoe company puts multiple carbon plates in a shoe with cushion between the plates, it is no longer a shoe. It's a spring and a clear
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Nike stirs the pot with 'gamechanger' running shoe in step with new rules | 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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