Description : Business Travel Backpack Laptop Waterproof Anti-theft Travel Backpack Large Capacity Student Schoolbag Anti-Freeze and Waterproof, High-density & High-quality nylon material Anti-theft zipper Double-layers four-teeth anti-theft zipper design Reflective strip design, Safely walking or driving at night 4.0 USB fast charging port, Charges up to 20% faster than standard cables and transfers data at 800Mbps via USB 2.0 TSA Lock design, there isn't any key assort with the lock, the key hole is for customs inspecting to protect your backpack not be opened rudely |