Using this backpack is a breeze. Open the roll closure for fast access to your stuff. You can put your daily essentials like notebooks or mobile devices in the removable organizer with a padded sleeve. The non - waterproof zippered pocket is great for items that don't need extra protection. When wearing it, adjust the ergonomic shoulder straps for a comfortable fit. As for maintenance, keep it dry to maintain the waterproof feature. If it gets dirty, gently wipe it with a damp cloth. Avoid sharp objects that could tear the nylon fabric. Also, don't overstuff it to prevent damage to the shoulder straps and the overall structure.