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Too much spring in their step? Nike running shoe under scrutiny after record marathon times - GeekWire
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Nike designs "fastest shoe ever" to break the two-hour barrier for marathon running | Nike design, Nike, Sneakers
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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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An Inside Look at Nike's Sub-2-Hour Marathon Quest | Running shoes for men, Shoe design sketches, Running shoes
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The race for a sub-two-hour marathon http://www.cnn.com/2017/05/05/health/ sub-two-hour-marathon-london-marathon-nike/index.html?u… | Nike, Marathon, London marathon
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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 Zoom VaporFly Elite Detailed Look | SneakerNews.com | Best sneakers, Sneakers, Running shoes for men
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