Franco Sarto Slip-On Slippers. Grey patient leather Want to turn your regular look exciting? Pair the Lucia loafer from Franco Sarto. Tassel accents bring an eccentric style to the sustainable loafer, backed by a synthetic sole partially made from bio-based materials. A penny-keeper strap gives an authentic touch. Synthetic upper partially made from recycled materials Slip-on Round moc toe Partially recycled synthetic lining with soft + eco-conscious comfort Synthetic footbed 1" stacked block heel Synthetic sole partially made from bio-based materials