Laptop Sleeve. Been using one ever since I started using a laptop 10 years ago. When not on the bike it lives in a padded computer bag...in it's padded sleeve. The bag and sleeve are both from Eagle Creek, they still make the bag, but apparently no longer have the sleeve. This combo has gone thru hell and still protected the laptop. It has fallen of the tailgate of a pickup at 35mph, been dropped from 4 feet by luggage handlers, etc.

I just upgraded my bike luggage to Ortlieb Rollers. But haven't commuted by bike in quite a while due to the current jobsite change.

Aaron