Fits in my rollerbag with no issue.

I also forgot that I got the Thule laptop case for the 13 inch macbook. Works like a charm. Its 80 bucks but its the best laptop case I have ever used.

I also bought a Antler Ultimate Traveler fro Ebags that is awesome. It works for my McRib, Macbook, Headset and a ton of other stuff. Allows me to pack my rollerboard for a longer trip and not worry about the computer on the top.

Oh and btw, the solid state hard drive allows it to remain in your bag though security.