On Running Cloudsurfer Next is a road-running trainer that pairs race-inspired responsiveness with smooth, roll-through cushioning—ideal for tempo runs and daily training. Key attributes: Black | Eclipse | Polyester | CloudTec Phase® cushioning for smooth transitions | Helion™ superfoam midsole for responsive energy return | 6 mm heel-to-toe drop | Lightweight, breathable engineered upper | Rubber outsole for durable traction | Lace-up closure | Tailored fit with secure lockdown | Padded tongue | Flat laces to reduce pressure on the instep | Pronounced forefoot rocker | Engineered woven upper | Race-inspired streamlined silhouette | Dimensions & fit: Heel stack height: 30 mm | Forefoot stack height: 24 mm | Heel-to-toe drop: 6 mm | Approximate weight: 273 g (varies by size) | Standard width | Runs slightly large (customer reviews) | Composition & care: Vamp: 39% polyamide, 39% polyester, 22% elastomeric polyester | Quarter: 83% TPU, 17% polyurethane | Tongue/lining: 100% polyester | Midsole: Helion™ superfoam | Outsole: Rubber