Whether you're driving the back roads of Kentucky or fishing the lakes of Minnesota, Goal Zero has you charged with the Nomad 13 Solar Panel. When it's folded, it's smaller than a standard sheet of paper and easily fits in most messenger bags or backpacks for easy transport. When you need to power your smartphone or tablet, simply open it up and expose the monocrystalline cells to the sun's rays and connect the device you wish to charge. It's capable of charging handheld USB devices and 12V gear with nothing more than the sun. When you're done charging, simply fold it back up with the magnetic closure, put it back in your backpack and away you go.