Reebok ZigSonic Running Shoes for Men - The Reebok Men`s ZigSonic Toning and Muscle Conditioning Shoes are designed with zig-zag shaped foam outsoles that use acoustic foam sound absorption technology to absorb energy at multiple angles and reduce vibration for a spring-like effect and a soft, quiet ride. Synthetic and mesh uppers are durable and feature a design that provides lateral support and stability, while the outsoles provide traction on multiple surfaces. Forefoot flex grooves. Lace closures.