Loving this bag and so are my friends, they all want on!e now! I'm still on a 10 day trip to london and paris. It's not a bag you can put everything in, but a sweatshirt, camera, flip flops, maps, water bottle,wallet,make up bag and some smaller things it's great. I love the security of the locks on the pockets, my only issues is that i have carpal tunnel and they take some getting use to and you have to stay in the habit of locking them every time and since it is a bit of a hassle you sometimes forget. but it's the whole reason i got the back so people can't take things out of the pockets. the zipper for the big pocket takes getting use to. you have to never pull either zipper all the way open or it's hard to get it aligned right so you can shut it. overall a very secure, attractive and lightweight product. i walked for 7 hours in it yesterday and my back only started to hurt at 6.5 hours.