On Running Cloud Sky Trainers combine adaptive CloudTec cushioning with a flexible Speedboard to deliver responsive comfort and natural movement. The design emphasizes adaptive traction and a streamlined athletic profile suitable for everyday wear. Key attributes: Black | Polyester | Adaptive CloudTec® cushioning activates at lower weights | Adaptive outsole responds to wearer biometrics for dynamic support | Enhanced flexibility for natural movement | Flexible Speedboard® for maximum movement | Lightweight construction | Streamlined athletic silhouette | Modern, fashion-forward profile | Dimensions & fit: Weight: 218 g | Composition & care: Vamp: 100% Polyester | Quarter: 100% Polyester | Tongue: 85% Polyester, 15% Polyurethane | Collar lining: 100% Polyester