Using this tumbler is easy. Just open the lid, pour in your favorite drink, whether it's a hot coffee in the morning or a cold juice in the afternoon. Keep in mind that when you fill it with hot water, the steam might lift the lid, but that's nothing to worry about. To maintain your tumbler, wash it with mild soap and warm water after each use. Don't use abrasive cleaners as they can scratch the surface. Store it in a dry place when not in use, and it'll serve you well for a long time.