On Running Womens Cloudsurfer ShoesPearl Ivory Sneakers CloudTec Phase technology for noticeably soft cushioning Computer optimized active midsole for our smoothest ride yet Made from 30% recycled materials while using less plastic Dyed using water saving dope dye technology Helion superfoam and our pioneering tech delivers our softest cushioning. New midsole tech cushions without the need of a Speedboard. With fewer components, it's lighter and easier to recycle Thin and light rubber