Put your best foot forward no matter where you go with the Franco Sarto Dianora Slingback. This sandal has a synthetic insole and a man-made outsole. Synthetic insole. Man-made outsole. Heel Height: 2 3/8". Fit: True to Size. Insole: Synthetic. Outsole: Manmade. Upper: Botanical Satin, Butter Nappa Leather or Japanese Floral.