By using a zip-off magnetic base, Alpinestars' new Tech Aero Tank Pack converts from a tankbag into a backpack. In either mode it expands from 20 to 30 liters, has a 15" laptop sleeve (we wouldn't stick a laptop in there with the magnetic base attached — goodbye data) and a fleece-lined sunglass/iPod pocket with headphone port. In tankbag mode the clear map pocket will come in handy, as will the detachable straps that make possible attachment to a plastic tank.


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