A super trainer for long runs and tempo runs, with a CloudTec® cushioning system engineered for a responsive ride and a LightSpray™ upper for an incredibly lightweight feel. Includes the Elite Run Sock High Hyper, delivering unmatched synergy with the LightSpray™ shoes. Made with On's revolutionary LightSpray™ technology. In just four minutes, a robot creates a precision-engineered, one-piece upper with a seamless fit. A super trainer for long runs and tempo runs. Athlete-led testing has helped ensure this shoe delivers high energy and performance, mile after mile. The CloudTec® cushioning system has been engineered for a responsive ride. Made with a top layer of Helion™ HF hyper foam for max energy return and impact absorption, plus a bottom layer of Helion™ foam for durability.