If you haven’t  about Nike’s Vaporfly sneakers yet, you soon will. The high-tech shoes were criticized starting in October after one marathoner (not the runner in Instagram post, who broke his personal best) broke the two-hour barrier and another shattered the women’s world record by 81 seconds (forever in competitive marathoning), both while wearing Vaporflys. Critics called the Vaporfly advantage “technological doping”. Over the last 13 months, runners wearing Vaporfly shoes have recorded the five fastest marathon times ever. After some modifications to the shoe, the world governing body for track and field, World Athletics, has approved Vaporfly for use in the upcoming Tokyo Olympics. This could be the fastest Olympics ever! Inside Sports has more here.

https://www.instagram.com/p/B7-wGV6gCZx/