You know of portable laptops because that is why laptops were created in order to make the desktop personal computer portable. But what do you think ultraportable means? Well this means that the makers of the Acer laptops have managed to put all of the components needed to run their laptops into a very light weight very slim laptop computer. These computers can weigh in at just between tow or three pounds and actually be under an inch think. This is a laptop that you could put in your notebook and no one would even know that it is there.