One size, very very big. As far as I can tell, this is a one of one sample. Used lightly. Where the straps connect the leather is starting to tear a bit, can hardly be seen and would likely need to be reinforced in order to wear the bag when it is full. This would be a cheap fix from any tailor. From top to bottom this bag is constructed from a tough bull leather, a white calfskin, a silver coated pirarucu leather, and a black lambskin on the bottom. The strap is constructed from nylon.