ON CLOUD Women's Cloudswift Running Sneakers Plum Women's Size 8 Run the city in the light, swift shoe with full road protection. The ON Women's Cloudswift Running Shoe Features Helion superfoam for high performance in urban environments. Strong yet stretchable, the mechanical side band delivers gentle midfoot support during swift city sprints. It also offers a hidden place to stash your laces. It's light on weight but big on energy return and durability. In short, everything you need to run the city.