Using this tumbler is super easy. Just open the lid and pour in your favorite drink, whether it's hot coffee or cold juice. To keep it clean, you can wash it with mild soap and warm water. Make sure to dry it thoroughly after washing. Remember, when you pour hot water, be aware that the steam can lift the lid. Also, avoid using abrasive cleaners as they might scratch the surface of the tumbler. Enjoy your drink with this cool prehistoric - themed tumbler!