Well, my SS Thermos went into the garbage can this afternoon. The last couple of times I used it, my coffee got too cold to swallow after just a few hours. When it was new a couple years ago, it stayed hot for quite a while. But today I really needed some hot coffee after pulling my boat and it wasn't fit to drink. I have a Stanley SS coming from Amazon. It better keep coffee hot enough to drink after 5 or 6 hours or it too will hit the garbage can innards.