The Cloudsurfer Max is On Running's most cushioned road running shoe, designed for runners who want maximum comfort on long distances. It features CloudTec Phase technology that creates a smooth heel-to-toe transition without the need for a traditional Speedboard. The midsole uses computer-optimized CloudTec Phase cushioning that collapses in sequence as you run, delivering a soft landing and powerful push-off. Upper is constructed with engineered mesh that provides breathability and a secure fit. The shoe sits on a durable rubber outsole with strategic grip zones for traction on various surfaces.