On Running Cloudsurfer Trainers are a dedicated road-running shoe built for sustained performance. They pair a technical upper with a high-performance CloudTec® sole for responsive cushioning on runs and PE sessions. Key attributes: Blue | CloudTec® sole for responsive cushioning | Engineered for sustained road running | Higher-performance sole configuration than lifestyle models | Technical construction optimised for running | Versatile styling suitable for PE and casual wear | Dimensions & fit: Available in EU 35.5–39 (UK 3–6.5). | True to size; if between sizes, size up half a size.