This is the perfect travel backpack. I liked it so much. I bought two, and I'm letting one go. It fitsa lot, but it's sleek and minimalist so you don't feel like a total oaf when you're walking into a fancy hotel lobby. In the photo of me wearing it, I have my sweatshirt clipped under the flap - it's really versatile. You can stow the straps if you check it on the airplane (but I usually carry it on). To get an idea of how much it fits, Google "StephanieDoes backpack" and you'll see my blog posts of packing this actual backpack. It's in good shape and I can't see a lot of wear.  From a smoke-free pet-free home.