[Looking for the latest version? The women's On Cloudflow 3.0 is now available.] The new On Cloudflow delivers lightweight performance for all your runs. On designers packed the updated Cloudflow with 18 adaptive Cloud elements and Helion foam to help cushion each step. Mated to a re-engineered Speedboard, the Cloudflow helps turn impact forces into acceleration. A Swiss-engineered mesh upper provides a minimalist look and lightweight feel, while zoned ventilation allows air to flow in and out of the shoe. On also added a small elastic band on the tongue to trap the laces so they don’t bounce around or come untied. On used a new outsole rubber compound with updated patterns to improve the shoe’s traction on both dry and wet pavement. Whether you’re hitting the track for some sprints or toeing the starting line of a marathon, the On Cloudflow is optimized for your fastest day yet.