This is an authentic MARC JACOBS Calfskin The Duffle Bag in Black. This shoulder bag is crafted of calfskin leather in black. The bag features a matching handle, an optional shoulder strap, and gold hardware. The top zipper opens to a grey leather interior with a pocket. Follow this item for alerts. Marc Jacobs is a registered trademark of Marc Jacobs. FASHIONPHILE is not affiliated with Marc Jacobs.