The Port Designs Chicago EVO 13.3/15.6 Anti-Theft Backpack is a modern backpack with plenty of features essential for travel. Its anti-theft design consists of a double safety system with shoulder straps that secure the main opening and durable lockable zippers. The Chicago EVO's next best feature is the power bank compartment with an exterior USB connection, which allows for your devices to be charged directly from the bag's USB port.