I ordered a horizontal one because I was considering getting a brief case but I'm sticking with a backpack at least for the rest of college. Mine is about 6 or so months old but if you have one you know they last forever.
For anyone that doesn't know what they are...
http://www.sfbags.com/products/sleevecases/sleevecases.php
For anyone that doesn't know what they are...
http://www.sfbags.com/products/sleevecases/sleevecases.php