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Nike's Vaporfly 4% Shoes Really Did Boost the Running Economy of Everyone Tested, Says Study | Runner's World
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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 Move in the "Race for a Breakthrough Foam?" The Vaporfly 4%, a Sneaker that Makes Athletes Run "Too Fast" - The Fashion Law
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