Fine-tuned for marathon speed, the Alphafly 3 helps push you beyond what you thought possible. Three innovative technologies power your run - A double dose of Air Zoom units helps launch you into your next step; a full-length carbon fiber plate helps propel you forward with ease; and a heel-to-toe ZoomX foam midsole helps keep you fresh from start to 26.2. Time to leave your old personal records in the dust. Energy Return for Your Marathon - Two forefoot Air Zoom units combine with ZoomX foam to store and return the energy back to you, powering every step. Cushioned Ride - The ultralight ZoomX foam midsole is fully connected to the outsole, providing you with a smooth transition and optimized responsiveness throughout your race. Full-Length Carbon Fiber Plate - A slightly wider carbon fiber Flyplate gives you a propulsive and stable feel with each step and turn. Atomknit Upper - The Atomknit upper offers lightweight containment and breathability. What's New? - Lightest Alphafly yet. Wider carbon fiber plate for increased stability. Improved multidirectional containment and breathability. Fully connected ZoomX foam midsole for smoother transitions. Notched laces offer a secure but soft lace-up. Integrated knit tongue with lofted padding helps alleviate lace pressure Product Details - Weight - Approx. 174g/6.1oz (Women's US 8). Heel-to-toe drop - 8mm.