To use these tote bags, simply open the top and put your belongings inside. They're great for daily use, shopping, or a day out. When it comes to maintenance, use a soft, dry cloth to wipe off any dirt or dust. Avoid using harsh chemicals or abrasive materials as they can damage the polyurethane material. Remember, due to the warning about exposure to certain chemicals, handle the bags with care and keep them out of reach of children. If you have any concerns about the chemicals, refer to the link provided in the product description for more information.