Thank you for viewing. This is an ACE business bag, a 3-way nylon x leather, 2-layer expandable function, with a handle, shoulder bag, and backpack, capable of storing A4 size documents. The color is black. I used it for work for about a year and a half. There are some signs of use, such as scuffing on the corners and minor scratches and stains, but there is no significant damage, and it is an item that you can continue to use for a long time. This is an A4 size compatible 3-WAY business bag from ace. It can be used as a: 　Backpack 　Briefcase 　Shoulder bag It's very useful. Also, because it is made of ballistic nylon, it repels some rain, which is a charm that leather bags don't have, and it is very well made. It has two compartments, making it easy to separate documents and PCs. The interior of the front compartment has a zippered pocket, a zippered pocket large enough to hold an A4 clear file, and a 2-part open pocket that makes it easy to quickly take out small items. One side has a dedicated pocket for folding umbrellas, which was very convenient. The PC storage pocket in the back compartment supports 13-inch PCs. It uses a highly cushioned, lightweight core material to achieve a cushioning effect. 【Expandable function】 You can expand the width to increase the capacity! By opening the zipper around the side, the gusset expands by about 4cm, and the capacity increases by about 6 liters, making it useful for everything from daily use to business trips. Size Height 30cm x Width 40cm x Depth 12cm Please check the photos and I will sell it to those who understand that it is a used item. Thank you for your consideration.