Men's Alphafly 3 (300 - Barely Green/Black Spruce) Narrow medical grade silicone designed to

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

Redesigned with more foam underfoot

This layer is crafted for comfort outside your comfort zone

HEALTH AND WELLNESS

and strategically placed no-sew overlays for toe protection

Men's Alphafly 3 (300 - Barely Green/Black Spruce) Narrow medical grade silicone designed toNike 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.