Yesterday's rocks are today's clouds when we're hitting the trails in On Footwear Cloudventure Trail Running Shoe. This trail runner has an uncanny combination of lightweight flexibility and phenomenal cushioning thanks to the CloudTec midsole, which eliminates unnecessary foam in 11 distinct areas to ensure proper cushioning and minimal weight. The upper surrounds your foot in breathable mesh, while the water-resistant exterior sheds mud and moisture with ease.