Training-shoe comfort meets racing-flat speed. The ultimate ride for running on the road. This men's On Cloudsurfer has a rocker sole and Clouds for comfort Double layers of EVA foam work with the CloudTec technology for super-soft landings followed by a powerful take-off. Enhanced by the explosive Speedboard, Rebound-Rubber Clouds under the forefoot give the Cloudsurfer its unique responsive ride. The mesh upper of the Cloudsurfer varies in density depending on the position of the foot. This provides the perfect balance of breathability and hold. Compactly woven sections support the forefoot as you transition into the push off phase, so you stay comfortable at high speeds.