An adjustable strap attached to the back of the shoe that wraps around the ankle.
About Mid Heel:
Mid heel are shoes which raise the heel of the wearer between 1 1/2" to 2 1/2" higher than the toes and provide moderate elevation. Mid heel shoes come in a variety of styles including sandals, slip-on shoes, pumps and boots. The heels on high heels shoes are also found in many different shapes, including kitten heel, block, tapered, and wedge.