Just some use, I will complete my review in a few weeks. Regarding the quality, this seems very solid reinforcements, sturdy zipper, etc ... Material resistant to rain. Just go to a sports store and look at the other models of this brand, the finishes are the same. Comfort level, is very well padded back and shoulder straps are very well (to get better, he must turn to the bags of hiking). The handle is also well thought out and solid. Compared to other reviews I also found the straps to adjust the straps are too long, and I do not see the use of drawstrings on the sides. Compartment level, it is simple with a large compartment 42 cm X 35 cm X 16 cm thick (j''y smoothly puts a simple bag for my 15.6-inch PC), a second compartment 40 cm X 30 cm x 8-9 cm. And finally the small front pocket which is 25 cm x 23 cm x 6-7 cm thick because it is flexible (we will return for example diary A5, kit, mouse, Power PC, PC cable, etc ...) . It has lots of gadget: key clip, small pouch, attached pen etc ...