Was purchased to replace a geschrottete ancient bottle with glass insert. Processing is super, no sharp edges or gaps. Have bewust dispense with a model with the click-lock, because of this unnecessary Parts are available that can break down and may no longer keeps the pot tightly. In this model, there are two (silicone?) Seals on the screw cap. The one at the top and one at the end of the screw cap. Wearing my opinion, also contribute to the double security against spills. Aussgießen is quite ok. Man / woman must pay attention to the position of the lid (marking on the screw) or even completely Screw. Keeps laaaaaange hot and dense! Filled the content is still really hot after 16 hours. When content is removed, then that's enough still for a 10-12 hour workday to provide themselves with hot contents. Clear recommendation. Ideal would be a Porfolioerweiterung the manufacturer / supplier to a 1-liter version.