Men's Nike Alphafly 3 Vest Internal drop-in pockets

Internal drop-in pockets

Automatically turns itself on and off

35% Elastane

- Wrist based heart rate

Works year-round – so you can wear it in any weather

Men's Nike Alphafly 3 Vest Internal drop-in pocketsNike 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.