Fits soooo much! Love all the amazing pockets and options on this bag. Used it for a weekend trip and it worked perfectly. Brought it on the plane and was able to fit under my seat too (it wasn't packed full though -if it was full I am not sure it would have fit). I love the dividers in the main compartment, the laptop pocket in the back, the mesh pocket inside main compartment, and all the easy access pockets in front. For someone like me that needs items to be organized and easy to reach - it's a dream! Be warned of size though - pay attention to dimensions. This is a large backpack!!