On Running Cloud X 4 AD combines versatile training performance with responsive cushioning, engineered for gym sessions, HIIT and short runs. The shoe pairs Helion foam cushioning with a fork-shaped Speedboard to deliver energetic, stable transitions. Key attributes: Black | Asphalt | Engineered mesh | Helion foam midsole for responsive cushioning | Fork-shaped Speedboard for propulsion and efficient toe-off | Breathable upper for ventilation | Star lacing system for secure midfoot hold | Improved heel hold for stability | Rubber outsole for traction | Engineered mesh upper with tactile hand feel | Low-profile, streamlined silhouette | Toe-box design allowing toe splay | Dimensions fit: Weight: 220 g | Heel-to-toe drop: 7 mm | True to size | Composition care: Polyester (upper) | Textile lining | Helion foam midsole | Nylon 6 Speedboard | Rubber outsole