I love this bag! So much that I bought another one! When I travel, I used to use rolling luggage and a backpack and the Cotopaxi Allpa has replaced both. It fits easily in the overhead bin and is roughly the same size as my international sized carry on bag. There is plenty of room for all of my clothes and a layer or two (using packing cubes) for at least a weeklong trip. The laptop sleeve could be a little bigger - I had to put my 13” laptop in the compartment but not in the sleeve. Not a big deal but it would’ve been nice for it to fit. The top zipper lets me have quick access to liquids and other things I need to get to. The Allpa carries very comfortably for me, even when full. Super durable materials, would definitely recommend!