LARGE CAPACITY& ORGANIZED: This 14.57 x 9.84 x 19.2inch large travel backpack has a capacity of 45 liters. It built with a 17-inch laptop compartment, a spacious main compartment, 2 front pockets, an anti-theft backpack in the back side and 10+ multi-functional pockets. Main compartment can accommodates your daily necessities (books, notebook, binders, stationery, clothes and etc). Front compartment with pen pockets and a key fob hook organizes your small items and makes them easier to find. USB PORT and EARPHONE HOLE: Connect your own power bank to the set-in charging cable of this mens backpack, then plug your phone's charging cable into the external Micro-USB to charge your phone. (Please noted you need to prepare your own power bank.) You also can listen to your favourite music using the hands-free headphone hole. PREMIUM MATERIAL & COMFY This large laptop rucksack is made of water-resistant and anti-scratch polyester fabric with double-sided smooth zippers and heavy-duty, high density nylon lining for lasting durability. A comfortable airflow foam-pad back design with soft, multi-panel breathable mesh padding provides maximum back support. The unique shoulder strap decompression design with massage mats helps relieve stress on your shoulders. TSA FRIENDLY & PRACTICAL: The laptop backpack can 180°unfolds the laptop compartment while keeping your stuffs organised in your backpack, much quicker and easier to get though checkpoint at airport. The sturdy luggage belt lets you pull the suitcase with one hand and its underseat carry-on luggage size is the best choice for airplane travel. A sturdy rugged molded top handle makes it a carry-on, and 2 side compression straps keep the versatile backpack at whatever size your daily needs.