The Ground Hakatai Pack is no flimsy little urban laptop bag. Its an errand-running machine. Yeah, your computer fits into a special sleeve compartment. But your cell phone, water bottles, MP3 player, keys, books, and farmers market produce fit in too. Oh, and a jacket in case it rains. You can pretty much hop on your bike and take everything you could need for the day, excepting perhaps your trusty blender. You may not be able to whip your peaches and apricots into a smoothie as you ride. But thats pretty much the only limitation on this tough-as-nails urban warrior.