This is an Ace business bag. It appears to be from Ace's brand called "ProNard." You might call it a briefcase. It's likely made of cowhide. The gusset is about 2 cm, so it's sized for documents or one laptop. Since the material is sturdy, documents are less likely to get bent compared to a nylon bag. I have used it, but I've taken good care of it, so there isn't much sign of wear, though there are some scratches. The scratches on the surface could likely be covered with oil or similar. It's black with a simple design, so it can be used by people of any age. The handles are sturdy, and it's made in Japan, as expected from the Ace brand. The outer pocket is magnetic, making it easy to put things in and take them out. Also, since it's not a current model, it has the quality of older materials and is suitable for those who dislike having the same items as others or prefer a business style with attention to detail. It has a material quality that nylon bags lack. I haven't used it because I carry two laptops, and it has been stored for a long time. Image 20 shows it with a 14-inch laptop inside. There is room to spare.