Using this tumbler is super easy. Just open the lid, pour in your favorite drink, whether it's hot coffee or cold juice, and you're ready to go. The tumbler will keep your drink at the right temperature for hours, perfect for long trips or busy days. When filling with hot water, be aware that the steam can lift the lid, so handle it carefully. To maintain this tumbler, simply wash it with mild dish soap and warm water after each use. Don't use abrasive cleaners as they may scratch the surface. If you want to keep it looking great for a long time, dry it thoroughly after washing.