Nike Alphafly 3 Racing Shoe

The Nike Alphafly 3 is the shoe that broke the two-hour marathon barrier when Eliud Kipchoge wore it in the Ineos 1:59 Challenge. The triple-stacked ZoomX foam midsole is topped by two Zoom Air pods at the forefoot, creating an energy-return system that independent researchers have measured as providing up to 4 percent metabolic savings compared to running barefoot. The AtomKnit upper is engineered specifically for marathon distances, providing a glove-like fit that does not cause friction or hot spots over 26.2 miles.

• Triple-stacked ZoomX foam + twin Zoom Air forefoot pods
• Up to 4 percent metabolic savings — scientifically measured
• AtomKnit upper — glove-like marathon-distance fit
• Worn by Eliud Kipchoge in the sub-2-hour marathon