I've bought the thermos about a month ago and am very happy with it. Since I often ride the bike to work, I needed a thermos that keeps absolutely tight, as it basically is in my pocket on the side and because the pot can fully convince. Incidentally, the seal appears (incidentally, already pre-assembled with me) to have to inject something once - at the beginning, the pot but a little dripped mitlerweile keeps them completely tight. From the temperature produces the pot keeps my tea about 7 hours hot, then it goes slowly into the warm, which I personally fully sufficient.