Engineered for long and tempo runs, this model features a Cloud Tec® cushioning system for a fast ride and Helion™ HF hyper foam for energy return. Regular. True to size. Cloud Tec® cushioning system Helion™ HF hyper foam for energy return and propulsion propulsive glass fiber nylon-blend Speedboard® breathable and ultralight engineered mesh upper enhanced rocker shape updated toe box design forefoot grip recycled nylon
