With the sole of the Cloud and a unique upper it is extremely lightweight. The zero-gravity foam promotes maximum mobility while the precision-moulded heel cap is engineered to keep your foot stable. The upper is constructed using a light and breathable knit-weave that doesn't restrict your movement in any way and helps to keep your feet cool. Good pre-owned condition, some inner heal wear and normal outer wear. Lots of great miles left in these shoes! S3