The Cloud X 4 AD trainers from ON are dynamic and durable, designed for versatility. From daily commutes to HIIT cardio, the newly engineered mesh upper delivers seamless performance with a lightweight and breathable feel. Featuring an updated heel fit and fork-shaped Speedboard® that increases flexibility, making for a comfortable wear. These trainers are light, cool and breathable with a mesh upper, offering comfort and support with CloudTec cushioning. They also have raised collar edges and a wide base for top stability.