Men's Alphafly 3 (300 - Barely Green/Black Spruce) Narrow and ensures a good fit

and ensures a good fit

The flatlock seams ensure reduced rubbing

and strategically placed no-sew overlays for toe protection

medical grade silicone designed to encourage your toes back into their natural alignment

Men's Alphafly 3 (300 - Barely Green/Black Spruce) Narrow and ensures a good fitNike Alphafly 3 Men's Road Racing Shoes 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.