Using this Mission Workshop Rambler backpack is easy. You can choose between the roll - top or flap - down closure according to your preference. To expand the backpack, simply use the expansion mechanism to double its capacity. When storing your laptop or tablet, place it in the front zippered pocket. For adding extra accessories, use the Arkiv rails on the shoulder straps. As for maintenance, keep it away from sharp objects to prevent the fabric from tearing. After getting wet, let it dry naturally. Regularly check the zippers and the COBRA buckle for smooth operation. Don't overload the backpack to avoid damage to the internal frame suspension system.