Using this tumbler is easy! Just open the lid, pour in your drink, and close the lid. Whether it's hot coffee in the morning or cold lemonade in the afternoon, it'll keep your drink at the right temperature. When filling with hot water, be a bit careful as the steam may lift the lid. To clean it, simply use mild dish soap and warm water. You can also use a bottle brush to reach all the corners. Don't put it in the dishwasher as it might damage the materials. Store it in a dry place when not in use to keep it in good condition.