User Review: REI Men's Traverse Pack
Number of Pockets: 4+hipbelt pocken+2 mesh waterbottle pockets
Height of Owner: 6'1
Price Paid: $50-ish
I bought this pack a few months ago mostly for school books, but it is also my mountain biking pack. It sits well on my back, and the pockets are perfect for both holding gear and calculators.
Overall zero problems, it was definitely one of my best gear buys in a long time.