Nike's controversial Vaporfly shoes are helping runners set new records, but some think it's 'technology doping.' Here's how they work.
Thursday, 16 January 2020 · The winner of this year's New York marathon, Geoffrey Kamworor, and the world marathon record holder, Eliud Kipchoge, both wear Nike Vaporfly shoes.
· Research suggests Vaporflys give runners more energetic efficiency because the shoes' foam-and-carbon sole structure ensures less energy is lost with each step.
A controversy over Nike’s hyper-advanced Vaporfly shoes that some say give runners an unfair advantage could boost sales, especially among amateurs hoping for more spring in their step who would not be affected by any ban. Yahaira Jacquez reports.