This is a Porter bag. It can be used as a backpack or carried by hand. It's a 3-way bag, so it can also be worn over the shoulder, but I threw away the shoulder strap. There are signs of use on the metal fittings, as shown in photos 4-6. There are stains on the outside, as shown in photos 7 and 8, and stains on the inside, as shown in photo 9. The stains are faint and not very noticeable, but please refrain from purchasing if you are concerned about them.