This is a Boston bag for travel. The size is the M size in the 8th photo. (Photos 7 and 8 are from Rakuten) Purchased from Rakuten. See the shop description below: A Boston bag that can be attached to a carry-on bag, making it useful for travel. It also comes with a removable shoulder strap, so you can use it in different ways depending on the amount of luggage and your needs. The front has a double-zip pocket, and inside there are four free pockets, providing excellent storage! Retail price: 4,200 yen After purchase, waterproof spray was applied. It has never been used. It will be folded in half and shipped in a box. Please also note that it will be stored at home. Thank you.