Men's Nike Alphafly 3 Size:12 comfortable run and the refined

comfortable run and the refined molded heel collar added to the Provision 8 emphasizes comfort and guidance while maintaining the sleek look you've always loved from this model

Distraction-free fit – Moves with your body as you run

Deep reinforced heel cup cradles heels for added protection from ground impact and repetitive stress

The MAGIC SPEED™ 4 shoe is designed to support your racing goals

To determine the optimal outsole geometry

Men's Nike Alphafly 3 Size:12 comfortable run and the refinedFine 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