I carry my laptop in a bag like this one from bug out gear.Bugout Bag Mine's black, but look carefully at that site. Mine has the extra outside pocket with MOLLE attachments like the ACU or Tan one, the black one on that site doesn't. Its a heavier bag, with a belt and sternum strap to help with load bearing. The larger front pocket is perfect for a laptop (I have a Dell Inspiron 600m, for size), I also put the laptop inside a semi-rigid case before putting it into the bag, so that adds some protection and a small amount of bulk. The main compartment expands slightly and will hold plenty of gear. My brother has one identical and uses it as carry on luggage for short trips.