It's actually a great size in real life. I love it, personally. Tons of pockets. But then, I'm a huge HH fan. Maybe check in the HH subforum and see if anyone there can tell you more about the size or capacity.
Not my cup of tea, but you certainly seem to like it It seems it is roomy enough and the color would compliment many an outfit. Worn correctly it could double as a day bag or afternoon and evening bag.