Hello There, I have long wondered what jug to earn and fluctuated between Essmayr, Alfi and Emsa. I decided ultimately for Alfi and do not regret buying the rather expensive pot. This pot keeps for hours drinks (tea with me) hot - really hot - even when the pot is no longer full. However, I have got used the jug with hot water before using "warm" short - which extends the length of holding time noticeably. Even after hours, the outer shell "cold" while inside remains the drink hot The cover is completely sealed - it "hissing" in any way. When pouring dripping or things are not going to. Anyone looking for a jug which should be absolutely tight and long hot holding - should strike here - despite the settled already in the top class price. In other words, the price is justified here.