Using the Klein Tools 5139B bag is a breeze. Simply unzip the heavy - duty nylon zipper and start placing your tools like pliers, wrenches, screwdrivers, and nut drivers inside. You can also store spare parts for easy access. When you're done, zip it up and you're good to go. As for maintenance, keep it clean by wiping it down with a damp cloth regularly. Avoid exposing it to sharp objects that could tear the Cordura® fabric. If it gets dirty, you can use a mild detergent and water to clean it gently. Just make sure to let it dry completely before using it again. Also, when storing the bag, try to keep it in a dry place to prevent any mold or mildew growth.