I love my Seagull bag. I had it customized with a lot of different inserts for papers, pens, coins, pockets, a lock, waterbottle. I'm sure you can do this on most bags, but it is a really nice bag. I've had it since 2008 and it has held up amazingly well. I got the medium size and I can carry a 17" laptop and a couple larger books. Ofcourse, that is not exactly that comfortable, but I can do it.