1. Made of high quality waterproof polyester, smooth and durable zipper and durable nylon lining. The zippered main compartment opens and lays flat for quick access to essentials. This backpack is durable and stylish.2. USB interface, convenient for charging mobile phones or other portable devices. Simply connect the power bank internally and plug it into the external built-in USB charger port to charge your device. With the headphone jack, you also don't have to open your backpack to listen to music on the go. Note: The backpack does not include a power bank.3. Organize your school supplies or weekend essentials in this handy backpack. The spacious main compartment provides plenty of room for clothes, towels, laptop or books, while the convenient front pocket holds items like pens, keys, pencils and chargers. Telephone. Two side pockets can hold bottles, umbrellas or other items.4. Backpack size: 30 x 16 x 42 cm (LxWxH). The inner laptop sleeve provides secure storage and fits most 15.6" laptops. Adjustable shoulder straps feature mesh padding and a fully padded mesh back panel for personalized comfort.5. This student backpack features a solid color and curved design to add a classic touch to your everyday look. This backpack is perfect for school, everyday use or short trips.