The Cloud X mixes training and running into one light and comfortable shoe to help you achieve your lofty goals. On footwear inspires a more efficient running style by promoting a more forward foot strike, as well as a centered and energized running position. Benefits: On delivers a blend of the injury protection found in traditional running shoes, with the natural ride of its lightweight counterpart. A versatile trainer that is ideal for runners and other athletes alike. Breathable mesh upper provides maximum airflow while adding support where needed. Traditional lace-up closure. Soft yet durable mesh fabric linings. Engineered heel cap with precision-molded cushioning pad for stability without strain. Reflective hits boost visibility in low-lighting conditions. Seamless shoe tongue. Differential: 6 mm Dual-density cushioned footbed is removable for air freshening. CloudTec sole unit is made from Zero-Gravity foam to combine minimal weight with exceptional cushioned comfort. A central channel between the medial and lateral sides of the foot lets the CloudTec sole adapt to the individual movement path of the foot. Deep flex grooves for an enhanced range of motion and maximum flexibility. Imported. Please note that ONLY the On Cloud 50/50, Cloud Terry, and Cloud running shoes feature an extra pair of conventional laces, along with the On Cloud easy-entry speedlaces. Measurements: Weight: 8 oz Product measurements were taken using size 8, width M. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.