![Marathon Sports on Twitter: Marathon Sports on Twitter:](https://pbs.twimg.com/media/DOnpGHKW0AE-bMV.jpg)
Marathon Sports on Twitter: "¡Prepárate para triunfar! 🤸🏼♀️ ¿Qué esperas? ¡No te pierdas nuestra oferta, en la nueva colección de zapatos Nike! De venta en Marathon sports. 👈🏻 https://t.co/kIQIS5ocol" / Twitter
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Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
![Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics | BBC Science Focus Magazine Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics | BBC Science Focus Magazine](https://images.immediate.co.uk/production/volatile/sites/4/2021/08/Alamy_2F3Y8J0-crop-ff47efc.jpg?resize=960,413)