Backpack, Black, Popular, Unisex, Business Commute, Business Trip

My husband bought this for a business trip of about 1 night and 2 days. He used it once and then bought another bag, so it was stored in the closet.
It has a small pocket and a large pocket on the outside.
There is a main storage compartment.
It can be used as a backpack, or by storing the backpack straps, it can be used as a tote bag.
I believe it is a no-brand item, but its simple and understated design makes it easy to use in business settings.