If you're on a tight budget,Timbuk2. You can get mediums and larges on eBay for $50-60 shipped if you're not super picky about color. But if you've got the cash,Bailey Super Pro all the way. Awsome reversible strap,lots of room,lots of pockets,keeps rain out,very durable.
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C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Brompton S6L/S2E-X/M6L-X/S12 T Line
