I got this bag because I started using public transportation working in the city and a purse wasn't cutting it. It's not super huge, so it's not hitting people. But it has a lot of space, a lot of pockets (some hidden) and a lot of room to keep everything you need. Including a full size pocket for your food. I love this bag. Super sturdy so I know that it will last awhile. It also kinda forms to my back so i don't feel awkward carrying it.