How satisfied you are with how the thermos keeps the temperature, this is an individual concept. So let's look at the numbers. Boiling water poured under the neck, 100 degrees, after 24 hours at room temperature showed 65.4 degrees. In principle, the result is not bad. Even better than what is stated on the box. (There in 24 hours the promised temperature is 58 degrees). I would like more, but so far I have not seen a better result. :-) I love hot tea. 65 degrees is not enough for me. But the wife and children are hot. They are quite happy.
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