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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's Vaporfly shoes are fine - but the sport's integrity is at stake if their next version is not banned
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Nike Vaporfly: 'Faster' running shoes will be allowed, World Athletics chiefs say | World News | Sky News
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Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
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