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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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Nike's sub-two-hour marathon shoe doesn't look the way you think it should - Canadian Running Magazine
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Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
![Nike's sub-two-hour marathon shoe doesn't look the way you think it should - Canadian Running Magazine Nike's sub-two-hour marathon shoe doesn't look the way you think it should - Canadian Running Magazine](https://runningmagazine.ca/wp-content/uploads/2017/03/Nike-Zoom-Vaporfly-4_8-1024x454.jpg)
Nike's sub-two-hour marathon shoe doesn't look the way you think it should - Canadian Running Magazine
![Nike's sub-two-hour marathon shoe doesn't look the way you think it should - Canadian Running Magazine Nike's sub-two-hour marathon shoe doesn't look the way you think it should - Canadian Running Magazine](https://runningmagazine.ca/wp-content/uploads/2017/03/Nike-Zoom-Vaporfly-4_6.jpg)