Timbuk2: Packed on your back or rolled like a suitcase, the Aviator Wheeled Pack is a high capacity. Panel loading gives it the easy access of a duffel and its expandable top flap enables you to buy those boots you can&#x27;t resist. A lightweight frame and grab handles everywhere make it easy to heave ho and strategically placed external zipper pockets facilitate last-minute grabs. And when confronted with stairs, the Aviator&#x27;s backpack straps untuck and easily clip into place for a secure…