Crafted from calfskin in black and topped with black logo hardware, these mules are shaped into a square front with an open back to lend a sleek finish to your contemporary edits. Details. Cosy BB Mules. Smooth calfskin upper. BB logo detail. Tone-on-tone insole with embossed logo. Black sole. Made in Italy. Comes with a Balenciaga original box. Size 45. Material & Care. 100% calfskin. Wipe with a clean, soft cloth.