The lightest Alphafly ever, Nike's Alphafly 3 is designed for marathon running and beating personal bests. New and improved, this 'Pick Up The Pace' model features a slightly wider carbon-fibre plate that propels you forward and offers heightened stability, along with a fully connected ZoomX foam midsole and a new AtomKnit upper that promotes multi-directional containment. Double forefoot Air Zoom units return and store energy, while an integrated knit tongue with lofted padding keeps pressure off the foot. | IM6673-100