http://www.kelty.com/kelty/index.cfm

great back packs, they make one with a helmet net and pockets on the belt strap (kinda wish I had that). I go between a kelty pack and a chrome metropolis depending on what I'm carrying. The only problem with the kelty packs for riding is that the decent sized ones (meant for day hikes) come with a stiffener in the back that conforms to your spine. Sounds great until you try to ride in drops or out on horns and it keeps you from being able to bring your head up far enough to see comfortably. Fortunately you can pull them out. Mine also has a pocket and hangar for a water resevoir.