On Running Women。Made for marathon training. The CloudTec® cushioning system delivers a fast ride with Helion™ HF hyper foam for energy return and lasting comfort. Activities Running | Road running | Marathon | Competition Key features • CloudTec® cushioning system engineered for fast runs • Double layer of Helion™ HF hyper foam for energy return • Glass fiber-infused Speedboard® for efficiency and support • A lightweight, breathable mesh upper • Padded heel design for comfort over long distances • Supportive upper molds and adjusts to your foot\'s movements • Rubber outsole for grip on the road • Support: Stable