Open Back Sandal. A mule with heel is indispensable in your shoe closet this summer! This mule is leather lined and has a covered block heel of 5.5 cm high. The leather sole with fine ribbed profile makes it extra comfortable to walk on. The square nose makes this sandal extra unique and a real eye-catcher under every outfit. Combine with your favorite dress for a super feminine look or with jeans for a cool but classy outfit. 100% Leather.