Patent Leather Slip On Black Europa Art Truffle Collection slip on loafers in black patent ASOS Pure Leather Plain Slip on Loafers Black Patent Leather Slip On Shoes with Mid Strap Loafer Design. This patent leather loafer is crafted entirely from patent leather with tone on tone stitching along the edges. The unique metal design on the heel showcases unmatched elegance and sophistication. Upper: 100% patent calf leather Sole: 100% calf leather Lining: 100% calf leather Outsole: red