Using this tumbler is easy. Just open the lid, pour in your favorite drink, and you're ready to go. Whether it's hot coffee or cold tea, it'll keep it at a good temperature for hours. When filling with hot water, be a bit careful as the steam can lift the lid. To clean it, use warm soapy water and a soft sponge. Don't use abrasive cleaners as they might scratch the surface. Keep it in a dry place when not in use to make it last longer.