Material: Polyester water-resistant fabrics
External USB Port: Yes
USB 2.0 Charging port design. Built-in USB cable. Use it to connect the power bank, then connect your phone with original USB cable to the USB port, you could charge your phone conveniently.
The design is slim, streamlined but still convenient and elegant.
Easily carry your documents, books and other personal items. Can fits upto 15.6″inch laptop.
Close-fitting straps, thick foam padding to prevent aches and pains, bring a sense of comfort.
Anti-theft code lock with very good storage utility.