This is a Dispatch backpack. It's an excellent backpack with many gimmicks that allow for customization. It's a bag with many pockets and hooks, providing a buffer to temporarily store smartphones, books, bottles, etc., when on a train or in other situations. It can be used for everyday use, short trips, or business trips. It also comes with a strap to attach it to a carry-on bag. It has become a rare bag that is difficult to obtain in Japan. Please consider it if you'd like to try it.