"Stability" for medium to low arch feet. Highly breathable "Airlex" sandwich mesh upper. Multi-density midsole with supporting EGX footbridge. Medial support pod to minimize over-pronation. Molded, external heel counter for extra rearfoot control. Mulltiple, removable insoles for fitting flexibility. Patented performance insole for support, comfort and shock absorption. Mozaic Customization Technology.