Proenza Schouler Lug Sole Mule Women's Size 39 Color: Black Shearling Sheep Fur Lined. Retail $740.00 Brand new, rubber soles just show blooming. With box and dust bag. The Shearling Lug Sole Mules are crafted in smooth leather and fully lined in soft shearling. Featuring a signature double-stitched welt and high-definition Rubber lug soles. 25mm rubber heel Round toe Upper: 100% leather; lining: 100% shearling sheep fur; sole: 100% rubber