Using this Klein Tools electrician's tool apron is a breeze. First, adjust the belt to fit your waist comfortably, which can range from 32 to 46 inches. Then, start filling the deep pockets with your essential tools like screwdrivers and pliers. Use the special pockets for your pens and pencils, and hang your tape measure on the dedicated holder. As for maintenance, since it's made of heavy - duty canvas, you can spot - clean it with a mild detergent and water. Just make sure to let it dry completely before using it again. When not in use, store it in a dry place to keep it in good condition. Avoid overloading the apron to prevent any damage to the rivets or the canvas material.