The A6 metal speed Sky Plus takes the Impressive metal speed sky and updates It with extra midsole foam to provide Additional bounce a lighter modified Upper and a repositioned carbon plate That jacket mesh upper is built to Improve breathability while the FF blast Turbo midsole cushioning aims to provide Greater compression and responsiveness When picking up the pace in addition There's a healthy layer of A6 grip Outsole rubber to improve durability and Grip the shoe is designed for runners Who increase their stride length more Than Cadence when moving faster while The medspeed Edge Plus is for runners That increase their Cadence both aiming To optimize the specific style of the User