Thermos Stainless Steel Thermos Black Color 3 Glass Thermos Set

There are some safety precautions that should be taken into consideration when using the product. It is recommended not to close the lid immediately after adding boiling water to thermoses with a vacuum lid and to wait for about a minute. This is because hot water expands the metal body and puts extra pressure on the vacuum cover. Since sudden openings may cause burns due to steam pressure, the lid of the thermos should be opened slowly and the pressure inside should be allowed to escape in a controlled manner. In addition, the thermos is suitable for hand washing, but washing it in the dishwasher is not recommended because high temperatures and detergents can affect the vacuum insulation over time.