Stainless Steel Vacuum Flask

Thermo Flask s insulating properties allow it to keep hot or cold liquids at the same temperature for several hours. It can keep hot beverages, such as coffee or tea, hot for up to 12 hours or longer, and cold beverages, such as water or chilled for up to 24 hours or longer. A flask is a double-walled container made of stainless steel or another insulator. The inner wall is usually made of glass or stainless steel, and the outer wall is usually made of plastic or stainless steel. To reduce heat transfer, the space between the inner and outer walls is vacuum