Crafted from premium cowskin leather, these BOSS Derby shoes offer a sophisticated look. The interior is lined with a blend of polyester and polyurethane for comfort. They feature a classic lace-up closure and a flat heel, making them suitable for any adult. Outer material: 100% cowskin. Inner material: 50% polyester, 50% polyurethane, 95% polyester, 5% polyurethane.