This versatile messenger is the perfect choice for tech savvy individuals! Completely redesigned with industrial-grade solar cells which charge quickly in direct sunlight. The solar charging is a breeze to set up. Simply plug your original USB charging cable into the USB port provided on the bag and stand in direct sunlight to begin charging! It can directly charge to your device, or store the charge in your power bank by connecting it to your power bank. It charges most brands of cell phones & tablets. The messenger is loaded with features including a padded tablet pocket, 2 open pockets, and a mesh zip pocket inside the front compartment underneath the flap. Inside the main compartment there is a sleeve for a 15.4" laptop and a zip pocket for accessories. The sides of the bag include a zip pocket and a mesh pocket. On the back there are two hidden backpack straps in the zip pocket. The versatile design allows this bag to be used as a messenger, a backpack, or a carry-on. Made of 420D jacquard mixed with 1680D ballistic and 600D polyester.