With its supple leather uppers and polished horse-bit buckle, the Madison loafer from Base London will turn some heads. Whether you're high-rolling on the Riviera or manning a back garden BBQ, these stylish shoes are your wingman for the season. Polished Horse-Bit Buckle Madison Loafer Supple Leather Uppers. Upper: Leather; Lining: Leather; Sole: Resin. Care Instructions: Clean and Protect Upper using Leather Care Products. Heel Height: 2.5 cm.