These backless penny mules are the answer to warm-weather dressing when trainers feel too casual and sandals aren't quite smart enough. Made from incredibly soft, textured milled calf leather in a soft off-white 'Blanc Cassé' shade, they feel broken-in from the very first wear. The classic penny strap across the front keeps things sharp, while the open back lets your feet breathe. Baudoin & Lange have finished these with a low-profile, flexible rubber sole that makes walking on hot pavements a breeze. Pair them with cropped linen trousers, a breezy midi dress, or relaxed denim. They are the easiest throw-on-and-go shoe that still looks entirely put together.