![By Wearing Vaporfly Prototypes, Eliud Kipchoge, Galen Rupp, & Shalane Flanagan Are All Guilty of Mechanical Doping in 2016 - Will Anything Be Done About It? - LetsRun.com By Wearing Vaporfly Prototypes, Eliud Kipchoge, Galen Rupp, & Shalane Flanagan Are All Guilty of Mechanical Doping in 2016 - Will Anything Be Done About It? - LetsRun.com](https://www.letsrun.com/wp-content/uploads/2020/01/women-rio-no-vaporfly.jpg)
By Wearing Vaporfly Prototypes, Eliud Kipchoge, Galen Rupp, & Shalane Flanagan Are All Guilty of Mechanical Doping in 2016 - Will Anything Be Done About It? - LetsRun.com
![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
![American track star Allyson Felix launches her own shoe company two years after leaving Nike - CBSSports.com American track star Allyson Felix launches her own shoe company two years after leaving Nike - CBSSports.com](https://sportshub.cbsistatic.com/i/r/2016/08/16/18a0769d-3126-4010-8b86-ff3ac3411e6b/thumbnail/1200x675/befe3fc185541316e0e315bab34976c8/allysonfelix.jpg)