This bag is awesome. My husband and I are both frequent business travelers and we are now sharing this bag. It fits perfectly under the airplane seat on all planes. The pocket design makes it easy to get stuff out of the bag while under the seat, without having to pick it up. It has tons of room to put everything you need including a change of clothes and toiletries if you need to. I even put a pair of shoes in there for when I arrived in hot Bangkok.