To unlock the optimal cushioning the new CloudSurfer uses CloudTec Phase midsole technology which was created fusing human intuition with computer optimization for active cushioning. As soon as your foot hits the ground, CouldTec Phase goes to work. Cloud by cloud, the midsole collapses in sequence to deliver a gentle hell to toe transition-a ride like you've never felt before. Designed without plastic overlays. Built from 30% recycled materials. Manufactured using the water-saving dope dye technology. Sustainability mustn't take a back seat to comfort.