This black Building Block leather belt bag will be a great accompaniment for days spent hitting those back-to-back sample sales – for we know how important it is to keep your hands free for grabbing key pieces. Each accessory has been crafted to exacting standards from smooth black leather and features a half-cylindrical design, a silver-toned exposed zip closure on one end and is complete with an adjustable belt that fastens at the waist. You'll see us wearing our Building Block pouch with Balenciaga, Re/Done and Miu Miu.