Nike Vaporfly trainers worn by Eliud Kipchoge and Brigid Kosgei are form of 'technical doping'
World Athletics sees risk in shoes tech but clears Nike design
4 Things to Know about Nike's Vaporfly Shoes | Watch Athletics
Meeting Eliud Kipchoge and testing the new Nike ZoomX Vaporfly NEXT% - Top4Running.com
Ben Johnson on Instagram: "Nike Vaporfly 3| Eliud Kipchoge| 20 Miles 20 miler out of the box for the EK Vaporfly 3. Just cruising around by feel (and it felt quite a