Need a bag that can do it all? This Letuwj backpack/shoulder bag is a seriously practical choice for work, school, or travel. It's made from durable, lightweight, and scratch-resistant Oxford cloth. The main compartment is spacious enough for a 15-inch laptop, plus books, folders, and more. It has multiple internal pockets to keep you organized. The coolest feature? A built-in USB charging port on the outside – just connect your power bank inside the bag, and you can charge your phone on the go. There's also a convenient strap on the back to slide over your suitcase handle, making airport dashes a breeze. The straps are padded for comfort, and the design is sleek and professional in black. It's not just a backpack; you can also carry it by the top handle as a shoulder bag. Whether you're a student, a commuter, or someone who needs a reliable carry-all for day trips, this bag combines smart organization with modern conveniences.