Miu Miu | New long-handled briefcase. The Miu Miu briefcase is a stylish and practical business bag, with a simple and elegant appearance suitable for various occasions. The spacious interior can accommodate a 31-inch laptop, phone, wallet, and other daily essentials. Material: Imported top-grade cowhide. Size: Height 23cm, Width 34cm, Length 10cm. Comes in original factory packaging. Color: Black.