Back in ancient times, villagers might have thought you possessed magical powers after witnessing you transform the Timbuk2 Tandem Pannier from an over-the-shoulder bag into dual saddle bags. In more recent times, you're seen as a savvy bike commuter with a streamlined set-up and no more back sweat from lugging around a hefty pack. It securely attaches to any bike pannier rack with its hook-and-loop straps, then comes off to sling over your shoulder as you stroll around town, climb stairs to the office, or pop into the local library to return some books. Magnetic clasps ingeniously hide its pannier persona by securing both bags in carry mode. External lid pockets give you quick access to your keys and wallet while the 15-inch laptop sleeve secures your favorite laptop en route to work.