This stylish and smart backpack is integrated with solar charging solution. Perfect for student, mobile commuter, traveling, outdoors activity and daily use. Solar bag absorbs sun light energy through solar panel and then turns into electric energy, which will be stored into rechargeable battery. Charger is compatible with most small mobile devices through corresponding connectors. This solar bag is suitable in the emergency situation when there is no electricity available. Power bank can be charged using the AC travel charger or DC car charger. Adaptor kit includes universal plugs for common cell phones. This product is easy to operate, convenient and fashionable.