On Running Cloudboom Sneaker Shoes Sandstorm Eclipse size men 11.5 in excellent preowned condition. No flows. The shoes are in nearly perfect condition, having been worn only 6-8 times. The On Cloudboom Onrunning Sneaker Shoes in Sandstorm Eclipse are custom athletic shoes designed for men who enjoy running and jogging. They feature a low-top synthetic upper, lace-up closure, and standard width. The shoe has a rubber outsole and a synthetic lining material.