New Premium SocklinerSolid Rubber Outsole: Complete solid rubber outsole for 360 degree grip.U4icX Strobel Lasting Board: Ensures a comfortable underfoot feel.Infinity PEBAX Wave Plate: The next level of Wave technology with a more visible and effective construction. The ultimate Wave features unrivaled cushioning and improved durability by absorbing and dispersing the impact at foot strike.Curved top and bottom hem to ensure accurate fit while minimizing excess fabric