This is the perfect bring it all bag when a roller isn't an option. I carry this bag when I'm biking to an assignment or when I'm using a rolling bag to carry lights and the backpack to carry cameras and lenses.
It looks a little more sophisticated and less like camping gear than some of the Rotation 180 bags but is still built to be durable.
It comes in 20L, 30L and 40L. I have the 30L. Shop on Think Tank Photo
(and choose a free gift with purchase when you use my link) Shop on Amazon