We're all in pursuit of lasting connections. Enter the Endorphin Speed 4 running shoe, ready to step into that role. Initially crafted as a race-day essential, it has surpassed expectations, proving equally adept during extended training sessions and final sprints. With its optimal blend of winged nylon-plate, Speedroll technology, and PWWRUN PB foam, this cushioned shoe strikes the ideal balance, offering support, energy return, and forgiveness in every stride. Smooth Speedroll technology for effortless speed, smooth turnover and propulsive forward motion PWRRUN PB foam is a true unicorn, offering the best combination of cushioning and energy return of any foam on the market Re-engineered winged nylon plate provides reinforcement while maintaining flexibility Technical Features Drop: 8 mm Heel: 36 mm Forefoot: 28 mm Support: Natural Weight 204 g (7.2 oz)