Use the power of the sun to charge your USB devices, like smartphones, GoPro Cameras, wireless speakers, Bluetooth headphones / earbuds, water purifiers, electronic cigarettes, etc.
Solar Battery Charger Backpack with Hydration Bladder
Use the power of the sun to charge your USB devices, like smartphones, GoPro Cameras, wireless speakers, Bluetooth headphones / earbuds, water purifiers, electronic cigarettes, etc.