After almost three years of success and feedback, the Cloudflow is revamped and retooled with On’s new Helion foam to give it a lighter and softer underfoot feel. For those who loved the first version, fret not as you’ll still be grabbing for this as your go-to shoe, and for those who didn’t, watch out – you’re about to have a new favorite. More comfort, more kick, more speed – you’ve just found a new shortcut to runner’s high.