Mephisto - Ecuba (Black Supersoft Smooth Lycra) - Womens: The Ecuba slip-on brings you tailored style and endless comfort for those long work days. Super soft leather upper is designed with Lycra(R) for a flexible and cozy fit. Cushioned, leather lined footbed features tiny air channels deep inside the sole to give you Air Jet technology. This circulates the air inside the shoe while you walk. Thermal polyurethane outsole features good traction. 4-point shock absorber system heel protects your feet from damaging jolts and vibrations.