I bought this about two years ago, but I've only used it about 20 times. Size: Height 26.0 x Width 22.0 x Depth 7.5cm, Shoulder strap length 71.0〜138.0cm Material: Exterior = Cowhide, Interior = Pigskin "Oil Buffed Leather" has the natural look and gentle feel of genuine leather, while also possessing a certain wild strength. This original material is made by applying combination tanning to carefully selected cowhide, then buffing the grain side (surface) to create a brushed finish, and further finishing it by repeatedly applying wax and oil. Because it contains a lot of oil, "pull-up" can be seen when it is rubbed or bent, where the oil within the fibers moves, creating a rich expression in various places.