one reviewer states that her laptop did not fit, how can i be certain mine will fit?
I have a 17" Dell, which measures a maximum of 1.5" in height when closed, and it fits nicely in the Camelbak Valencia backpack. After the laptop is in the backpack, there is an inch or two of clearance between the laptop and the zipper. There is plenty of room for other essentials, such as a sweater or a few magazines. It makes a wonderful carry-on, and I have traveled with it that way a few times.
(The reviewer that could not fit their laptop into this backpack must have had a giant and/or medieval laptop.)