Nike Alphafly 3 trainers size 41 Only worn 3 times 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-fibre plate helps propel you forwards 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. What's new about the Alphafly 3? The Alphafly 3 is our lightest Alphafly ever, featuring a slightly wider carbon-fibre plate for increased stability, a fully connected ZoomX foam midsole for smoother transitions and an all-new AtomKnit upper designed for improved multi-directional containment and breathability. #nike #runningtrainers #nikeflyknit #nikezoomx