Using this tumbler is easy. Just open the lid and pour in your favorite hot or cold drink. It's great for taking with you on hikes, to work, or during your daily commute. When filling with hot water, be a bit careful as the steam can lift the lid. This is normal and not a sign of a problem. For maintenance, wash it with mild soap and warm water. Don't use abrasive cleaners as they can scratch the surface. After washing, dry it thoroughly to keep it in top condition.
