This is an ALEXANDER WANG Lambskin Rose Studded Mini Marti Convertible Backpack in Black with Rose Gold Hardware. This stylish backpack is made of supple black lambskin leather and features detachable leather backpack straps with rose gold clasps, an optional black leather shoulder strap, two external pockets with zippers on the side, a cross-over flap with straps, and an external center expansion zipper. The flap opens to a spacious black nylon fabric interior with a zipper pocket.
