Ottawhack is what happens to your back after pedaling around too long wearing a poorly-loaded, one-sided messenger bag. Timbuk2s Outtawhack Daypack looks like a messenger bag, but the backpack-style dual straps wont cause you lumbars to lean. Thats rightTimbuk2s classic organizing and pedal-friendly design with an incognito backpack-style suspension. Your aching back is stoked. The Outtawhacks padded, air-vented back panel treats your back to cush luxury while you ride, and the padded laptop sleeve keeps the future safe from harm. Computers are the future, duh. Arrange all your pencils, pencil sharpeners, mechanical lead pencils, extra lead pencil lead, pencil eraser extensions, protractors, compasses, sextants, TI-85s, paper clips, paper clips converted to rubber-banded sling shots, and origami note folding guides in the Outtwhacks front organizer panel. I love the school supplies aisle.