Tal B.wrote a review of The North Face Mentor Backpack - 2150cu in on December 3, 2008
Well, the bag is nice. it sits good on the back and the internal split is smart. However, a laptop back should protect the laptop. In this bag there is now protection from most sides, so you must use a laptop sleeve. another issue is that the chest strap is missing for no good reason.
So - make sure to use a sleeve or get a bag with a padded laptop slot.