On Mens Shoes Running Shoes Black/Graphite Synthetic & Rubber What makes the Cloudventure Waterproof unique is the wedding of lightweight materials and the pioneering technology. The membrane is 100% water and windproof and physical, not chemically coated, meaning it does not wash out over time. This allows it to be highly stretchable, lighter overall and far more breathable compared to most other waterproof shoes on the market.