Very nice tote - I use it as my personal item with another Travelpro Rollaboard.  It fits under the seats with no problem and I can usually get a good amount of stuff in it.

The only thing that drops it from 4 stars from 5 is that the strap that goes over the handle of the other suitcase gets stretched out after very few uses, and makes the tote very loose on top of the other bag.