[Material] Our large thermal teapot is made of stainless steel (no metal taste, no rust) and has double walls to create a vacuum that insulates liquid and does not allow heat flow. Because of this feature, your hot tea, soup, coffee, hot chocolate and milk will stay hot while ice cold drinks, juices and water stay chilled and ice cold for hours. [LED display] You can display the temperature of the contents via an LED display above (if you touch it lightly). Your advantages: you can decide whether the liquid inside is too hot or too cold for you. Mouth burns can be prevented and the digital display looks modern and elegant.