- Prad* Triangle Block Heel Half Slide/Mule This heeled mule reimagines the traditional "penny mule" with a statement round toe and rubber platform, accented by an enameled metal triangle logo. Revealing a modern style. Glossy leather has traditionally been used in the production of exquisite shoes. After being reinterpreted in Prad*'s modern design, it now has a mixed style. Upper: Open edge beaded cowhide. Lining: Sheepskin lining. Heel height: 8.5cm. Sole : Rubber sole size: 35-39 (40 customized, non-refundable),