The Alphafly 3 is designed for marathon speed and helps you push your limits with three innovative technologies. A double dose of Air Zoom units combined with a full-length carbon fiber plate propels you into your next step. With the ZoomX foam midsole, you stay fresh from kilometer 1 to 42. It's time to leave your old personal records behind: run away from yourself. Air Zoom elements for a powerful run Two Air Zoom elements in the forefoot store energy and release it, providing more power with every step. Cushioning with ZoomX foam The ultralight midsole made of ZoomX foam is fully connected to the outsole, allowing for a smooth roll and optimized responsiveness throughout the race. Full-length carbon fiber plate A slightly wider carbon fiber flyplate gives you a dynamic and stable feel with every step and turn.