It is probably the best anti-theft backpack with key and usb port with compartments for laptop and waterproof notebook. With this backpack you have all the security for any trip in the city, national and international:
 
 Anti-theft backpack with usb charger
 Anti-theft backpack with TSA key
 Anti-theft backpack for laptop / computer over 17 cm
 Anti-theft backpack waterproof usb notebook holder
 TSA anti-theft backpacks for men, women and teens
 
 Characteristics:
 TSA anti-theft lock design
 Spacious compartment, suitable for 15.6 inch laptop
 Scratch resistant material, fadeless, durable
 Ergonomic design, hold up to 20kg
 Bottom antifouling design
 External USB charging port
 
 This backpack IS VERY POPULAR, it is highly sought after!  Recommended and shared by famous bloggers on YouTube.