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adidas Unveils Illegally Fast ADIZERO PRIME X 2 STRUNG – So Much Technology in a Running Shoe, It's not Allowed in Elite Races
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World Athletics Announces New Shoe Rules; Nike Alphaflys Are Banned But Vaporflys and Next% Are Ok - LetsRun.com
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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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Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
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