TSA-FRIENDLY & MULTIPURPOSE : At checkpoint, it unfolds freely, 90-180 degrees,exclusively designed for AIRPLANE TRAVELING.Served as an everyday backpack,school backpack for teen boys/girls,high school student backpack or spacious college backpack for men, professional backpacks for laptop. Occasional international travel, outdoor camping backpack, hiking backpack with a large capacity with usb charging capability.USB Charging Port: Travel Backpack with charging port offering a quick access to charge your phone and other electronic devices like iPad, laptop and all other USB devices conveniently and freely.No specific battery pack is required. RFID PROTECTION Pocket: RFID protection pocket protects your personal information from being stolen(e.g. credit cards, passports, and driver's license) by a RFID scanner.It can be served as an everyday backpack,spacious college bookbag or high school student backpack, professional backpack for laptop or daily use anywhere you go.