I will ship via Eco-Mercari delivery. Please agree. This is a horizontal bag. The shoulder strap is removable, and the backpack straps can be stowed away when not in use. The main compartment can hold A4-size files. A B5 notebook can be stored in the large inner pocket. It's an expandable type that expands when you have more luggage! I will ship it folded. Horizontal bag, school bag, cram school bag, backpack.