This is huge! And light! While I worried that the bag wouldn't hold up, it survived four airline flights in Mongolia. I would have rated it higher except that 1) it is impossible to use a TSA lock on the zipper and 2) there are six small zippered storage areas on the outside of the bag. These are too small to be useful, and, if they are used, makes the linear size of the bag too large for an airline check-in. (The official linear size is 61 inches and the maximum permitted by most airlines is 62.)