BANGE 45L Travel Backpack, Carry On Backpack Convertible Duffle Bag Fit for 17.3 Inch Laptop for Men and Women

TRAVEL BACKPACK WITH THREE CUBES: BANGE backpack has large capacity with three cubes, and you can classify your different items in the cubes.
^^ 26-45L EXPANDABLE DESIGN: Before extended is 26L, dimensions are 20.4 x 13.3 x 6.6 inch; after extended is 45L, dimensions are 20.4 x 13.3 x 10.6 inch. It is perfect for 5-7days daily travel. ^^
LARGE CAPACITY CARRY ON BACKPACK: BANGE mens backpack has many compartments and pockets. The main pocket can hold your travel goods, fit 5-8pcs clothes. The wet and dry separation pockets can hold your washing items and keep other items dry all the time. Front compartment can also hold magazines, Ipad and power bank which can charge your phone. ^^ WEEKENDER BACKPACK WITH
USB CHARGING: BANGE backpack travel ensure a secure long-lasting usage everyday or weekend, it is a great companion for business trip, hiking, travel, camping and other outdoor activities. It is convenient to charge your phone from outside due to there is a USB charging port, and you only need to place a power bank in the backpack. ^^
WATERPROOF & ANTI-THEFT DESIGN: 1. Backpack back zipper pocket protects your precious articles, such as phone, passport, wallet from potential theft when traveling or lining up; 2 Waterproof PVC material, internal waterproof pouch to protect your goods from water. 3. Ergonomic airflow back design with thick but soft multi-panel ventilated padding for added support and comfort, decreasing the pressure of shoulder and neck; 4. Shoulder straps with adjustable anti-slip chest belt and quick release