![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?quality=90&resize=960,413)
Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics | BBC Science Focus Magazine
![Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian](https://i.guim.co.uk/img/media/f5670c6db81bb06a5192775ad68df5503dafde3e/1191_273_2309_1386/master/2309.jpg?width=1200&height=1200&quality=85&auto=format&fit=crop&s=f0a9eb842cad09baac87d9c701bd3b0f)
Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
![Nike launch Alphafly running shoes to mass market that comply with new rules | The Independent | The Independent Nike launch Alphafly running shoes to mass market that comply with new rules | The Independent | The Independent](https://static.independent.co.uk/s3fs-public/thumbnails/image/2020/02/06/08/gettyimages-1204321457.jpg?width=1200)
Nike launch Alphafly running shoes to mass market that comply with new rules | The Independent | The Independent
![What are Nike sprint 'super shoes' worn by Dina Asher-Smith and why was original design axed for Toyko Olympics? | The Sun What are Nike sprint 'super shoes' worn by Dina Asher-Smith and why was original design axed for Toyko Olympics? | The Sun](https://www.thesun.co.uk/wp-content/uploads/2021/02/SP20_FOOTWEAR_VIPERFLY_detail2_original_hd_1600.jpg?strip=all&w=960)