Endorphin Speed 5 is Created for you who want to run fast, Whether it's tempo runs, Intervals, or long runs at high speed. With an Updated S-shaped nylon plate and Responsive Pwrrun PB Cushioning, you get a Dynamic Running Experience with Efficient Energy Return and a Smooth Take-off in every step. The upper in light and airy Engineered mesh Ensures a snug and Comfortable fit even when the pace Increases. At the same time, the Outsole is Improved with Increased Durability for even more Kilometers. Whether You're Chasing a PR or want one shoe that Handles both speed and Everyday, Speed 5 Delivers a Versatile and Efficient Running Experience.