This bag does not have a shoulder strap. It's also useful as a sub-bag. When you open the zipper on the back, you can attach it to a carry-on bag. This one bag is light and convenient. However, I didn't use it with a shoulder strap, so I've lost the belt. There are five pockets on the outside and two small pockets inside. There are no noticeable scratches, but please refrain from purchasing if you are concerned about minor details.