I have gone through SO many bags like this, trying to find the right balance between a hip/fanny pack and carrying a full-on backpack. I wanted something I can carry for days out on the town so my pockets are stuffed and uncomfortable, and something large enough to carry the essentials (which for me are phone, keys, a compact umbrella because I live in the PNW, and a small water bottle) with room left over for me to stuff in smaller purchases like books, magazines, or small souvenirs when I travel. I am not exaggerating when I say that I've gone through dozens of different sizes and none of them hit the mark until I discovered this Moon Bag, which is everything I wanted. It looks great with a clean, simple silhouette and fits all my listed essentials with some extra room. And, the adjustable strap and the curved design make it sit comfortably on my body as opposed to all the square hip and fanny packs that always feel awkward to me. This is a winner.