Product Review (submitted on April 11, 2014):
I echo the rave reviews of others and add that I'm so happy I bought this size. It's big enough for binders and files plus a slim water bottle. Long zip pocket contains personal items; long flap pocket holds more. Pens, pencils, etc have their own easy access holders; keys attach to clip. After a decade of daily use mine looks almost new. So glad I spent more than I planned up front. Fabulous investment. Even loaded, it's not too big for this average-sized female.