Smooth out your runs in the On Cloudsurfer Max. The Cloudsurfer Max combines On's innovative double-layered CloudTec Phase cushioning with a subtle rocker design to guide you effortlessly through every mile. In our On Cloudsurfer Max review, run tester Tom said "The Cloudsurfer Max has taken the top spot in my rotation for most of my road miles. It provides a slight trampoline effect, whether I'm heel-striking or landing on my midfoot." Details: Upper: The smooth, engineered mesh construction delivers excellent breathability even on hot summer days. A flat knit ankle collar and stretchy tongue create a locked-in feel, while pillowy heel cushioning wraps your foot in comfort. The handy pull-tab makes slip-on easy without causing irritation during runs. Midsole: The double-layered CloudTec Phase cushioning uses computer-based simulation technology to create the perfect balance of soft landings and energetic transitions. The unique oblong pods collapse like dominoes, rolling you smoothly from heel to toe with every step.Outsole: Designed for road running with durable construction that maintains ground connection despite the generous stack height.