On Running Cloud Sky Trainers bring the brand’s signature CloudTec® cushioning to a lightweight, agile trainer designed for flexible movement and responsive support. The design adapts CloudTec® and a flexible Speedboard® to activate at lower weights for a soft landing and energetic take-off. Key attributes: Gray | Grey | Polyester | Adapted CloudTec® activates at lower weights | Lightweight and flexible for agile movement | Flexible Speedboard® for maximum movement | Outsole adapts to biometrics to support growth | Cloud-inspired look | Streamlined, agile silhouette | Dimensions & fit: Weight: 220 g | Composition & care: Vamp: 100% Polyester | Quarter: 100% Polyester | Tongue: 85% Polyester, 15% Polyurethane | Collar lining: 100% Polyester