I used this for a 5 day work trip and the size was great: fit everything I needed and fit under the seat in front of me (United Basic Economy). The front pocket even fit my Lenovo Thinkpad x230 laptop (11.75"x8"x1") The quality of the bag is good, except for the shoulder strap. On one side it's sewn to the bag directly. On the other, there is a rectangular metal fastener that flips and twists around. The strap is super uncomfortable and can't easily be replaced. The handles seemed solid though, so I used those most of the time.