Thanks for the tip TeaForTulips. I just ordered my second Baggallini Crinkle Messenger Bag. This one is pewter with mimosa on the inside; the other one is khaki with spice on the inside.
My aunt was the one who recommended it to me before our December 2008 trip. We have 2 kids who were 4 and 2 at the time. The bag worked beautifully. I had 2 autograph books, 2 sharpies, 2 passports for Epcot, quarters and pennies for penny press, a camera, a small wallet, sunblock, sunglasses, first aid kits, wipes, bib, hand sanitizer, tissues, maps, cell phone, KTTW cards, chapstick and 2-3 diapers. There was probably more that I have forgotten. It held everything and I carried it for 12 full days. It wasn't heavy and I could find everything quickly.
We also got caught in a quick shower and the bag seemed to be water resistant as the contains were dry.
We are planning another trip this December and I will be taking this again. I also used it in Arizona for a 2 week trip and it worked there for the hiking and day trips.