Similar to Devin's great original bag handle, but this one has magnets!  When I watched the video for the 12th or so time, I was bothered by all of his bags sitting slightly open, or crumpling on themselves because they couldn't stay shut.  I knew there had to be a better way.  So I took some magnets (5mm diameter and 2 mm height) and made magnetic handles that keep your polypanels bag both easy to carry and fully closed.  You can buy the magnets on amazon.