The BANGE 2581 Multi-Purpose Travel Backpack is a versatile and stylish bag designed for modern travelers and professionals. With expandable storage up to 40 liters, this backpack accommodates laptops up to 15.6 inches and features multiple compartments for easy organization. The water-resistant material and anti-theft pockets provide added security and protection for your belongings. It also includes a USB charging port for on-the-go device charging. The ergonomic design, adjustable shoulder straps, and durable zippers ensure comfort and reliability, making the BANGE 2581 an ideal choice for travel, work, or daily use.