First off, for those who complain that this bag is "too big", what did you expect? If you need a bag that holds a 15.4" laptop and you want room to carry other stuff, guess what? You need a large bag. If you are under 5'4", you may want to reconsider buying a vertically oriented bag, as it will hang awkwardly. But if you are tall enough, this bag is perfection. I'm 5'6.5" and it hits at the top of my thigh. The vertical orientation distributes the weight of the laptop evenly, resulting in less pressure on your shoulder. The leather is high quality, and richly colored. The side pocket is convenient (esp. for those who mentioned "losing" items at the bottom) for storing small items such as keys.  There are side pockets for cell phones and pens, and plenty of room for additional files. I am able to fit my laptop, charger, a notebook, AND my small purse--combining the items so that I can carry on my luggage and this bag. The back panel fits easily over my luggage handle, and has a zippered bottom so it converts nicely to an additional side pocket when you aren't traveling. The lining is a deep turquoise blue. Another review mentioned that the lining seemed "cheap." I disagree. It is a very thick nylon--not glamourous or sexy by any means, but very sturdy.

I've only had the bag a few weeks, so I can't comment on the durability. . .yet. But I am really rough on my laptop bags, so I will check back in with an update in six months or so.

In the meantime, thanks to all the other reviewers for your solid comments--very helpful!