![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
![Amazon.co.jp: Nike CU4123-501 Zoom X Vaporfly Next % 2, Hyper Violet, Flash Crimson, Football Gray, Black, Genuine Product, Hyper Violet/Flash Crimson/Football Grey/Black, 23.0 cm : Clothing, Shoes & Jewelry Amazon.co.jp: Nike CU4123-501 Zoom X Vaporfly Next % 2, Hyper Violet, Flash Crimson, Football Gray, Black, Genuine Product, Hyper Violet/Flash Crimson/Football Grey/Black, 23.0 cm : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/61nwbCiqJpL._AC_UY1000_.jpg)
Amazon.co.jp: Nike CU4123-501 Zoom X Vaporfly Next % 2, Hyper Violet, Flash Crimson, Football Gray, Black, Genuine Product, Hyper Violet/Flash Crimson/Football Grey/Black, 23.0 cm : Clothing, Shoes & Jewelry
![ROME, ITALY, JUNE 23. 2020: Nike Running Shoes ALPHAFLY NEXT . Controversial Green, Black Athletics Marathon Shoe Editorial Stock Image - Image of black, foam: 188352359 ROME, ITALY, JUNE 23. 2020: Nike Running Shoes ALPHAFLY NEXT . Controversial Green, Black Athletics Marathon Shoe Editorial Stock Image - Image of black, foam: 188352359](https://thumbs.dreamstime.com/b/rome-italy-june-nike-running-shoes-alphafly-next-controversial-green-black-athletics-marathon-shoe-detail-air-zoomx-foam-zoom-188352359.jpg)