Built with more comfort, more support, and a more sustainable design, the On Cloudrunner 2 Waterproof Shoe helps us log daily miles the right way. The waterproof upper not only keeps puddles and rain at bay but does so in eco-friendly fashion with the use of recycled polyester. The upgraded Helion superfoam midsole is built for stability and brings a higher energy return to our stride to help fight fatigue, while the rubber compound outsole with an enhanced traction pattern keeps us surefooted over pavement, dirt, grass, and more.