■ Soft and gentle cup insole with three-dimensional cup insole gently fits the sole of the foot. Made of soft urethane material around the foot. ■ Flexible lightweight sole with EVA + R sole with excellent cushioning & flexibility. Flexible to match the movement of your feet, making it easy to walk around and comfortable. ■ Easy to put on and take off with elastic material on both sides of the instep. It fits the shape of the foot and expands to make it easy to put on and take off.