✈ TSA Approved Anti Theft Lock: The computer backpack is equipped with a smart secure lock that is made of high strength zinc alloy with a solid, compact body to prevent theft and well safeguard all your valuables securely. The password lock is easy to set (Includes instructions), if you forget the password or have any product quality issue,reach MARK RYDEN out for solution. ✈ Large Capacity: One separate laptop compartment fits 15.6 inch Laptop as well as 15 inch, 14 inch and 13 inch Laptop. One spacious main compartment fits magazine, light clothes or travel supplies. Besides, the travel backpack owns a lot of independent pockets for large storage and organization for small items, hidden zipper pockets for additional anti theft protection on the back of the backpack. And there are one side pockets, so you can store your bottle and umbrella. ✈ USB Charging Port Design: The laptop bag comes with a charging port you can link your phone to and easily charge during outdoors and travel.