I bought this bag as a birthday gift for my boyfriend, because his small day bag for traveling is worn to pieces. But honestly he hasn't gotten to use it at all yet because I've been borrowing it from him almost every day. He lives in Paris and I find that it's the perfect size for me to carry about my 12" Macbook Air, a small umbrella, snacks, and whatever purchases I make throughout the day. I love that it's lightweight and low-profile, I feel like less of a sherpa hauling around all of my possessions on my back. Makes it very easy to go into stores without knocking things off shelves whenever I turn around. The straps are very comfortable, I don't even feel the bag on my back. The only con is that the water bottle pockets are susceptible to stretching, so don't try shoving a big water bottle in there, because they've stretched out a bit on one side (like a wide-mouth nalgene). Slender water bottles should be fine. This bag is not waterproof but I carry an umbrella inside it so that's a moot point for me. It is NOT a full-sized backpack, I can fit 1 pair of shoes in it along with a set of extra clothes but it's a bit tight with everything. But just for running errands, it's excellent. I'm buying another for myself as we speak because they're on sale!