Enjoy a steaming cup of tea on the go with this tea tumbler by Tryeh. Crafted from teflon with a Yixing clay lining for your practical use, it has the unique ability to absorb the flavors with continued use of the same tea. Yixing clay is porous and will become seasoned by the tea leaves to optimize the tea flavor. Furthermore, the tumbler comes complete with a stainless steel strainer, and keeps the tea warm up to 3 hours. Do not use this tumbler in the microwave or the dishwasher, or on the stovetop.