Mephisto TwainA modern, casual mens slip on, this comes with an extremely lightweight and supple sole that supports the natural rolling motion of the foot. Flexible straps on the sides of the tongue also help with putting the shoe on and taking it off. The SOFT AIR midsole, flexible and soft, reduces the shock from walking to an absolute minimum. This protects your feet, joints and vertebrae, while maintaining proper hygiene. For a comfortable and effortless walk.