The L400® Sports Series provides superior cushioning and shock absorption for athletic and walking footwear. Includes a soft, CopperGuard® top cover made from state-of-the-art copper fibers to help prevent bacteria, fungi and odor. An advanced Lynco arch support comfortably balances your feet and provides proper body alignment. Features a Pro-Shox® center layer for comfort and shock attenuation and an AeroCell™ polyurethane core for support. and shape retention. Light-weight, resilient and provides unmatched support and stability.