Auxetic structures stiffen under pressure for adaptive support

On Running Cloudboom Echo (Women's) - White/Mint
The ultralight shoe with a carbon Speedboard for your fastest marathons and road races. Built beside elite athletes.
Technology
The ultralight Cloudboom Echo combines a carbon Speedboard with an extreme rocker shape to give every step an extra powerful kick. Add the minimalist upper and enhanced forefoot cushioning and you're ready to crush records in complete comfort. Every element is engineered for performance.
Material
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
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.
Weight 190g
Heel Drop 9mm

Hygroscopic fibers pull moisture away from skin contact areas