Using this tumbler is super easy. Just open the lid and pour in your favorite drink, whether it's hot coffee or cold juice. When you're ready to drink, close the lid and take it with you wherever you go. Remember, when you fill it with hot water, the steam may lift the lid a bit, so be careful when opening it. To keep your tumbler in great shape, wash it regularly with mild soap and warm water. Don't use abrasive cleaners as they may scratch the surface. And that's all you need to know to enjoy your tumbler to the fullest!