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Nike's Latest Sub-Two-Hour Marathon Attempt, the Zoom Vaporfly 4%, Gets a Release Date - WearTesters
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New shoe makes running 4 percent easier, 2-hour marathon possible, study shows | CU Boulder Today | University of Colorado Boulder
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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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