Excellent backpack. I bought this backpack to take to Disney World Parks. It worked very well. I'm diabetic so needed a little more than a bag to carry my meds, snacks and water. Deep inside pocket for my wallet. It was quite full with my headphones and switch as well as my 1 liter travel bag on the plane. The only downside to this bag is that the battery zipper doesn't stay closed and tends to fall out inside the bag. It was really comfortable to wear in the park. I've used it as a weekend travel bag wherever I go. This is the most useful backpack.