The Cloud Tec® cushioning system provides a responsive ride, while the Helion™ HF hyper foam ensures energy return and comfort. cloudtec® cushioning system for fast runs double layer of helion™ hf hyper foam for energy return glass fiber-infused speedboard® for efficiency and support lightweight, breathable mesh padded heel design for comfort over long distances supportive construction that molds and adjusts to foot movements rubber for grip on the road stable support
