He ran with prototype shoes with carbon fiber in the sole. https://www.believeintherun.com/2019/10/09/a-breakdown-of-the-nike-kipchoge-prototype/ https://www.b

He ran with prototype shoes with carbon fiber in the sole. https://www.believeintherun.com/2019/10/09/a-breakdown-of-the-nike-kipchoge-prototype/ https://www.believeintherun.com/2019/10/09/a-breakdown-of-th...