Using this tumbler is easy. Just open the magnetic lid, pour in your favorite hot or cold drink, and close the lid. The magnetic closure ensures it stays shut. When it comes to cleaning, you can use mild dish soap and warm water. Avoid using abrasive cleaners as they might damage the color coating. To maintain its insulation, don't let water stay inside the tumbler for too long after use. Dry it thoroughly and store it in a cool, dry place. Also, since it doesn't come with a straw, you can use your own if you prefer. Enjoy your drinks with this stylish and practical tumbler!