Pinnacle tech creates a propulsive ride fine-tuned for marathon speed. Fine-tuned for marathon speed, the Alphafly 3 helps you push beyond what you thought possible with three innovative technologies. A double dose of Air Zoom units works with a full-length carbon fiber plate to help launch you into your next step. The ZoomX foam midsole helps keep you fresh from mile 1 to 26.2. Time to leave your old personal records in the dust. Propulsive Air Zoom Units - Two Zoom Air units in the forefoot store and return energy back to you, helping power your every step. ZoomX Foam Midsole - 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? - 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. 218g/7.7oz (Men's US 10). Heel-to-toe drop - 8mm.