I have never felt comfortable carring a purse, they are always to big, to small, to long or to short.  I don't mind carring a backpack but sometimes they are just not practical.  This bag is the best of both worlds.  It is not a backpack so a little more upscale and yet it can be tossed over your shoulder and has the ease of one.
Tons of space and great compartments inside and out for keeping things organized.

I purcased the Medium size as I intended to use it when I went on vacation.  This bag fit all my needs.  Easy to carry and not bulky.  It could be worn over my shoulder or extend the strap and I was able to sling it across so the zipper rested in front for those crowded areas were pick pockets are plentiful.

I was able to carry: larger wallet, small digital camera, 1 guide book, 1 paperback novel, 2 glass cases, a water bottle, gloves, a small umbrella and a shawl for when it got cold on the way home.  All this and it did not seem heavy, clumsy or bulky...AMAZING...there was even space left over...Amazing....and it wasn't like lugging around a sack...Amazing.  Like my trusty backpack and yet so much nicer to carry around and absolutley no back or shoulder pain.

An added bonus, no one gave me the stink eye when I went into shops to browse as often happens if you carry a backpack.  I wish I had found this years ago.