On Running Cloud Sky Trainers combine adapted CloudTec® cushioning with a flexible Speedboard® to deliver responsive, lightweight comfort. The design pairs performance-focused features with a sleek, prototype-inspired silhouette for style-conscious wearers. Key attributes: Black | Polyester | Adapted CloudTec® midsole activates at lower weights | Flexible Speedboard® for maximum movement | Outsole adapts to wearer's biometrics to support foot development | Reconceptualised prototype design | Sleek trainer silhouette | Dimensions & fit: Weight: 218g | Composition & care: Vamp: 100% Polyester | Quarter: 100% Polyester | Tongue: 85% Polyester, 15% Polyurethane | Collar lining: 100% Polyester