This bag has a separate three-layer design, with a zipper in the center and magnetic buttons on both sides. It's a tote bag, but it also comes with a shoulder strap, so it can be used as a shoulder bag. The color is black. B4 size compatible. Used once, but there are no stains or damage. Please understand that this is a used item. Color: Black Features: 2-way Accessories: Shoulder strap Stains/tears: None Business bag Tote bag Shoulder bag Working professional