Materials Recycled. Reinforced. The 100% recycled polyester engineered mesh upper delivers 100% performance. Targeted reinforcements ensure ventilation and hold for sharp turns. In the outsole, the rubber compound in specific geometry increases ground contact area for maximum efficiency even in wet conditions. Design Outrun your echo More speed, More energy return, More comfort. The Cloudboom Echo is our fastest-ever marathon shoe. Developed with our fastest runners, designed with our lightest materials. Less weight and more performance. Get ready to blow your P.R. to pieces. Boom by name, boom by nature.
