The On Cloudflow is all about speed and acceleration on the road, a versatile running shoe built to handle long slow distances, tempo runs or speedwork. On's famous Swiss-engineered Cloudtec® outsole features 18 individual Cloud elements crafted from Helion™ superfoam making for a moderately cushioned yet highly responsive ride. The high propulsion Speedboard® offers soft landings and explosive takeoffs, turning every stride into forward acceleration.