This duffel bag's design is quite popular in many ways. Not only is it durable but it has the traditional opening from the top.
Inside there are two sides with pockets. One side has a few openings that can be use to store small items like glasses, hard drives, chargers, cables, and other accessories. Likewise, on the opposite side is a zippered pocket which can hold more valuable belongings like passport, wallet, phone, keys, etc.
Outside of the bag contains the famous shoe compartment on the side, a pocket for a water container, and a small to medium size zippered pocket that can hold more small items.
In addition, that pocket can be pulled away from the bag to allow a suitcase handle to slip through. This will make it more convenient to travel with the bag when it is set on top of a rolling suitcase.