Summary: This is a great product. is durable and good for almost all occasions. (hiking, tourists, beach, weddings, parties...). the backward flap I'm guessing is for it to be less accessible for looters.
Summary: I used the camera bag on a weekend trip to New York City. It fits well over the shoulder and is comfortable to wear walking around the city all day. Since I didn't want to carry something too bulky or bring along another bag, I found it useful. I stored my Cannon Rebel with 2 lenses inside along with my wallet, guide book, cell phone, sunglasses, extra memory cards and other random stuff I wanted for the day.
Pros: Comfortable, Lightweight, Strong Construction, Well Padded
Summary: This is a great bag for the price. It suits perfectly my D80 with the 18-135 lens, extra batteries, and some other goodies. The rear opening bag can be a bit annoyng in some cases, but is helpfull when you are standing, cause nothing will come out the bag.