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Controversial Nike Vaporfly running shoe used by Brigid Kosgei to smash Paula Radcliffe's marathon record set to be BANNED due to foam and carbon fibre sole-plate - FootwearTimes
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World Athletics gives seal of approval for controversial Nike Vaporfly shoes | Athletics | The Guardian
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Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
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Nike Vaporfly: BBC Sport explains the technology & arguments about the controversial trainers - BBC Sport
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