Using this tumbler is easy. Just open the lid, pour in your favorite drink, and you're ready to go. It's great for both hot and cold beverages. When it comes to cleaning, you can simply wash it with mild soap and water. Remember, if you fill it with hot water, be aware that the steam might cause the lid to lift. Don't worry, it's not a problem. Store it in a dry place when not in use to keep it in good condition.