☀LOTS OF STORAGE SPACE & POCKETS☀--Hanke 3 in 1 travel backpack expands and holds more than what you originally expect.Quickly and easily unzip the zipper on the side to expand the backpack from 19L to 28L for extra space. One spacious packing compartment roomy for your phone, books, clothes,folders, power bank, pen,wallet and other items.One computer compartment can hold 17Inch, 15.6 Inch,14.3 Inch,13.3 Inch laptop. ☀TSA FRIENDLY BACKPACK☀-- TSA-Friendly function is exclusively designed for airplane flight travel. At Checkpoint, unfolds the laptop travel backpack freely 90-180 degree and the laptop stays flat without taking it from the bag,making it getting through airport security checkpoint more easily.Size: 12.2 *7.8 *18.4 (inch).The laptop travel backpack is large enough for hiking, vacation, travel, weekend getaway, overnight trip. ☀RFID BLOCKING& & ANTI-THEFT☀-- Travel business backpack is equipped with RFID blocking pocket blocks RFID signals and protect your personal information (Like ID Cards and Passport). With Fixed Password Lock and durable metal zippers head for keeping your valued items safe while traveling.Making your journey and travelling more convenient and safe wherever you go.