This bag is very well built, with quality fabric and stitching, and the handles and sling are quite heavy duty. It's designed intelligently, with ample room, good accessibility, and large, useful side pockets. It also happens to look really nice, which is something I can definitely appreciate. The navy/black combo works very well, and this bag looks the quality piece of merchandise that it is. It's not just functional, it looks great, too (and like it cost far more than it actually does). I only paid $17 (actually, it was only $2 after I redeemed a few Chase Amazon points) for this bag from an Amazon vendor, and I couldn't be happier. Its depth and width make it so that I can load everything I need for weekend trips, including clothes and my laptop, with room to spare. The side pockets are big enough that they can be used to contain dirty laundry, separating it from your clean stuff. I love that I can just bring ONE bag with me now on weekends, instead of two or three little ones! It's plenty big, but I would imagine it can also be used as carryon luggage- check the actual dimensions on the product page to be sure.