I am an Engineering student who has way too many math and science gadgets/books for any ordinary backpack. I need a pack that has plenty of pockets, and some seriously comfy straps because all of my books can reach the 40lb mark on any given day. After searching high and low for just the right pack, I discovered the DAKINE Park pack. I checked it out at my local outfitter to see if it was capable of serving my many needs and then found it here for less $$$. In short, it is the best pack I have ever owned, big enough for all of my school junk, incredibly comfortable, big smooth zippers, with pockets and storage to spare. In fact, it is sitting by my side in the Lab as I type this. 5 stars and an A++.