You may also review a handful of user reviews, including my own, which offer various photos and body references:
My very wordy review of the Camera I-O
The videos accurately represent the Camera I/O -- the longest dimension is it's width, or the side that the bag rests on when it is sitting upright, or placed into a Brain Bag. It's very similar to the dimensions of my size 6T Brain Cell, if I were to place two of these Brain Cells back to back, so that the smallest dimension of the Brain Cell, set by the thickness of the laptop, is doubled.
Sorry, didn't see leviathan's updated post with labels on the images till after I posted.
Congratulations on selling out so quickly! I'm glad I bought mine the first day. I just hope my planned trip to England/ Ireland/ Wales comes through next month so I can use it!