1. Durable Material: This stylish laptop backpack is made of high-quality waterproof polyester fabric; size: 31cm*4cm*46cm; 2. MULTIFUNCTIONAL COMPARTMENT: Separate compartments and pockets are designed to provide ample space for your computer, iPad, power bank, A4 documents, wallet, pens, cards, clothes and more. Carefully padded padding protects your 17.3-inch laptop. An RFID pocket with ID protection protects the date encoded on most IDs, credit cards and passports.; 3. USB Port and Headphone Jack: The built-in USB port is convenient for charging your phone with a connected power bank (external battery not included) With a headphone jack, you can easily listen to your favorite music. and commute easier. The air circulation system in the back and the secret back pocket are designed to keep you comfortable and safe on the go. , adjustable shoulder straps and sturdy handles make it comfortable to carry for long periods. Perfect for study, travel, business, everyday life and outdoor activities.