I have the messenger bag. It's great. Very comfy, roomy enough for a few diapers for my DD and a small pack of wipes, hand sanitizer, sunscreen, my cell phone and there's a clip that I am able to clip my wallet to inside the bag. I can wear the messenger bag on my back or in the front. It's very lightweight and I just love it. I only use it for vacations (Disney and others). One of the greatest travel investments I have made - and take it from me, b/c in 2005, I threw away my wallet. It was a Coach wristlet and I had it on the changing table when I was changing my son's diaper. Well, it was so small that I didn't realize I had scooped it up with all of the other table changing stuff! I lost Disney Dollars, cash, my credit card, debit card, drivers license, room key, my Disney Dining Card....I was miserable for 2 days of my trip.
So now I don't go on vacation without my baggalini messenger bag, thank you very much.