The Cloud with Zero-Gravity foam and On's patented Swiss CloudTec(r) technology is the lightest running shoe in the world, with outstanding cushioning and impact protection. In other words, reduced to the pure maximum. Experience the combination of a soft landing with an explosive takeoff for an unbelievably light running sensation. Weight: 7.0 ounces (size 8.5) Heel-toe offset: 0.23 inches Category: Lightweight Goal: Made to run with ultimate lightness and comfort Runner Profile: Runners who want a minimal running shoe with maximum cushioning. Separated by a central channel, the CloudTec(r) sole responds to your individual gait. The Cloud elements are affixed directly to a semi-transparent Speedboard allowing each Cloud element to move individually.