Details About Men's On Cloudboom Echo 3 Men's On Cloudboom Echo 3 :: Lace up for long-distance success with the Men's On Cloudboom Echo 3, a running dynamo. Designed for breathability and minimal water absorption, the 100% rPES microfiber upper keeps you light on your feet. The real magic lies in the spoon-shaped, full-length carbon Speedboard nestled between plush midsole layers, drastically reducing energy loss while boosting your propulsion. Superior cushioning and energy return come with the Helion HyperFoam midsole, crafted from Pebax and combined with Cloudtec pods. The outsole's thin rubber pads and larger forefoot pad ensure optimal grip and traction, while the precision-engineered heel construction offers unmatched support. Developed and tested by athletes, this shoe is your ticket to racing excellence.