1. 50 80L EXPANDABLE LARGE CAPACITY : The travel laptop backpack has many compartments for organization. You can expand it according to your needs using the zipper and buckles. The main pocket can hold your travel items. There is a useful wet pouch. The front compartment can hold magazines, a laptop or other travel personal items. 2. COMFORTABLE TRAVEL BAG: This backpack is made of thickened fabric, being anti theft, water resistant and scratch resistant. Its back and shoulder straps are made of elastic and breathable materials. It has an ergonomic back design with thick and soft multi panel ventilated padding for extra support and comfort, reducing the pressure on the shoulder and neck. 3. USB PORT DESIGN: The men's travel backpack has a built in USB charger outside and a built in charging cable inside, providing a more convenient way to charge your phone while on the move. Note that this travel backpack doesn't include a power source itself; the USB charging port only easy charging access. 4. ANTI THEFT DESIGN: The back pocket of the backpack protects your valuable items like phone, passport, wallet from theft during travel or when lining up.