I needed a lightweight, very portable, decent looking, reasonably priced, sack pack with enough compartments to hold everything I carry, and I found it in this bag.  It's over-the-shoulder straps are wide enough to prevent them from sawing their way through my shoulders, and the largest compartment easily holds a fairly heavy hoodie, with enough room left over to handle additional items.  The webbed side pouches can hold two good-size water bottles, and there's still space for smaller items, such as an iPod, a camera, and a your car keys.

This may not be the bag you'll want on your back as you climb Mount Everest, but it is the perfect bag to carry during your next visit to Disney (-land or World).  And, it comes in an assortment of colors.