I ordered this carrying case for my 17" laptop, and I am delighted with the storage capacity and quality. There is plenty of laptop room with a couple of inches of width to spare, and there's an adjustable padded strap inside to keep it from sliding side to side in the excess area. There is also a velcro strap to hold the laptop firmly in place when it and the case are closed. As others noted, I can zip open the case and use the laptop without taking it out, a feature I was particularly looking for. The case is well padded, and has plenty of pockets that add storage but not bulk. There's not enough space for anything thick like textbooks, but flat notebooks, folders, or small books would easily fit. One of the pockets has loops and pockets to hold pencils, calculators, business cards, and other small items. The bag has a handle and a detachable shoulder strap. This is a great case and the price was far below what I expected to pay for anything like it.
** Added later ** Another Amazon customer cautioned me about the need for laptops to have vents unobstructed so they won't overheat, so using your laptop in the case is not a good idea; I'd like to pass his warning along. In my use of the carrying case, I have found it is easier to just pull the laptop out anyway, especially with the power source and occasional thumb drives sticking out.