The Air Zoom Alphafly Next% ‘Lime Blast’ utilizes the same performance technologies as the prototype shoe that Eliud Kipchoge wore when he broke the two-hour marathon barrier in October 2019. The black AtomKnit upper, featuring a lighter and more breathable version of Nike Flyknit, rides on a ZoomX midsole fitted with a full-length carbon fiber plate, good for a sense of propulsion with each step. Zoom Air Pods are added to the forefoot for enhanced energy return.