The Nike Alphafly 3 is tuned for speed, pick up the pace from half-marathons to the full marathons. 3 Nike technologies come together in the Nike Alphafly 3 to push you further and faster. Starting with the 2 Air Zoom units in the forefoot, paired with a wider, full-length carbon-fibre plate for propulsion in each step. And if that wasn't enough, you will find heel-to-toe ZoomX in the midsole to power you through each step.