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. Design: All-new Atomknit upper designed for improved multidirectional containment and breathability Notched laces offer a secure but soft lace-up Integrated knit tongue with lofted padding helps alleviate lace pressure Features a slightly wider carbon fiber plate than previous versions for increased stability Full-length carbon fiber plate delivers a propulsive sensation the helps you smoothly transition through every stride and tackle turns with confidence In-Shoe Comfort: 2 forefoot Air Zoom units combine with ZoomX foam to store and return energy back to you, powering every step Fully connected ZoomX foam creates an ultralight and cushioned feel, helping you stay fresh and comfortable from mile 1 to 26.2 Additional Details: Weight: 218g / 7.7 oz (Men's size 10) Heel-to-toe drop: 8mm