The Alphafly 3 propels you forward into the next level of marathon speed. Nike packed three innovative technologies into the latest Alphafly: A pair of Ait Zoom units to launch you forward A full-length carbon-fiber plate for a more propulsive ride A heel-to-toe ZoomX midsole to make every step feel fresh With its cutting-edge tech and bold style, the Alphafly 3 makes your runs more powerful and lighter than ever before. Details: Upper: The Atomknit upper offers containment and breathability that provides a comfortable fit. Midsole: A full-length carbon fiber plate helps push you forward effortlessly, while heel-to-toe ZoomX foam keeps you feeling fresh from start to finish. Outsole: Its electric outsole gives you better durability and traction on any run.