On cloudflash Women’s size 9 Plenty of life still in these shoes. On Cloudflash Women's White/Black Step into high speeds every time you lace up the On Cloudflash! With a carbon-fiber Speedboard™ and two layers of Helion™ super foam, these running shoes are race-day approved. An ultra-light, single-layer mesh offers excellent airflow to keep you cool as you fly through the miles. Feel the explosive lift-offs on the carbon-fiber Speedboard™, helping you reach high speeds with ease. Twin layers of CloudTec™ and Helion super foam sit above and below the plate, increasing comfort when you push the pace.