The design and materials used ensure an effective seal regardless of the temperature of the drinks or meals inside. As a result, the thermos can be stored and carried in various positions without fear of the contents leaking or spilling out.

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.