This backpack was a gift that was never used. It has been sitting in a closet for over 10 years. The backpack has a label with a M, which I think means medium. The backpack has an internal support frame. The backpack has a main compartment, a lower compartment, two side pockets and a top compartment. No wear, because it was never used. There is some thin clear material flaking off inside of some of the pockets, which I assume is a weather proofing coating.