The On Cloudswift running shoes are equipped with Helion active super-foam. This foam will make you feel smoother and more agile while you run. Their mesh construction offer a great deal of benefits, from a tight fit to great breathability. Strong yet stretchable, the mechanical side band delivers gentle midfoot support, meaning you're comfortable tied in so you can sprint without losing the feeling of freedom. Features: - Upper: Mesh designed for perfect comfort.