I'm the kind of person who likes to have everything I could possibly need when I fly, right at hand, so this bag was perfect!  I could fit not only my purse in it, but many other extras, that I would want to have for my long flight!  It fit neatly under the seat in front of me, and I easily reach down to unzip it, and take out just what I needed.  It has many compartments on the outside and inside, to organize all of my paperwork, snacks and all else I could possibly think to pack.  It was easy to carry, yet I could also attach it to the matching 21 inch rolling suitcase in the set.  The price was very reasonable too.  I would never fly again without it!