On Running Cloudmonster 1 delivers maximal cushioning and a springy, responsive ride designed for running and all‑day comfort. Key attributes: Black | Synthetic textile | CloudTec® cushioning system for springy comfort | Helion™ foam for impact absorption | Speedboard® for propulsion | 8 mm heel‑to‑toe drop | Lightweight (≈278.1 g per shoe) | Integrated one‑piece lacing system | Cushioned sockliner for all‑day comfort | Rubber outsole for durable grip | Seamless, clean one‑piece upper | Hidden metal eyelets | Rockered forefoot / curved toe for toe spring | Minimal, modern aesthetic | Dimensions & fit: 7.5: 25.5 cm | 8: 26 cm | 8.5: 26.5 cm | 9: 27 cm | 9.5: 27.5 cm | 10: 28 cm | 10.5: 28.5 cm | 11: 29 cm | 12: 30 cm | True to size. See size chart for conversions. | Composition & care: Upper: synthetic textile | Upper: synthetic leather | Sole: synthetic