On Running Cloudswift 4 AD delivers responsive cushioning and stable support for road runs and all-day wear. This version focuses on energy return and a breathable engineered upper for comfortable miles. Key attributes: Gray | Grey | Synthetic | CloudTec® cushioning | Helion™ foam midsole for energy return | Nylon-blend Speedboard™ for propulsion | Breathable/engineered mesh upper | Standard/flat lacing | Stiffened heel counter with soft filling | Rubber outsole for grip | Engineered mesh upper | Low-top silhouette | Round toe | Logo details | Updated midfoot cage for lockdown | Composition & care: Upper: Synthetic material, Textile | Lining: Textile | Midsole: Helion™ foam | Speedboard: Nylon-blend | Outsole: Rubber