The purpose of a thermos is to maintain the desired temperature of the beverage or meal inside it for as long as possible. This applies both to a high temperature, for example for tea or soup, and to a low temperature when you want to have a chilled drink on hand in the summer.

The outer shell is made of a special non-slip material that grips well in the hands, preventing it from slipping during use. This makes it significantly easier to use and prevents damage from falling.