Answer
Mar 08, 2025 - 04:35 AM
Vacuum insulated tumblers work by using a double-walled construction with a vacuum between the walls. This vacuum acts as a barrier to heat transfer, minimizing the conduction and convection of heat between the interior and exterior of the tumbler. As a result, the contents inside the tumbler can maintain their temperature for extended periods, keeping hot drinks hot and cold drinks cold.
