![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)
Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics | BBC Science Focus Magazine
![Chris Chavez on Twitter: "Nike has unveiled the super shoes that Eliud Kipchoge will wear in his attempt to break the two hour marathon barrier. https://t.co/mhTlUbKNZT" / Twitter Chris Chavez on Twitter: "Nike has unveiled the super shoes that Eliud Kipchoge will wear in his attempt to break the two hour marathon barrier. https://t.co/mhTlUbKNZT" / Twitter](https://pbs.twimg.com/media/EGpQ_ohX0AUbSfB.jpg:large)
Chris Chavez on Twitter: "Nike has unveiled the super shoes that Eliud Kipchoge will wear in his attempt to break the two hour marathon barrier. https://t.co/mhTlUbKNZT" / Twitter
![It stretches the limits of performance': the race to make the world's fastest running shoe | Running | The Guardian It stretches the limits of performance': the race to make the world's fastest running shoe | Running | The Guardian](https://i.guim.co.uk/img/media/cc8d03039454c146ddf523d17bce945e38b8b238/0_286_3204_2434/master/3204.jpg?width=700&quality=85&auto=format&fit=max&s=9f7313da31eedd355bfec0331c87f1f0)