Why do we need such a small thermos?

For traveling, trips or work, I think the bottle simply too small. because it should already be at least 0.75 l or even 1.0l content.

Otherwise the bottle make a good impression. The lock can be opened by pressure in the middle (so no annoying screws). The contents of the bottle fills about two to three times the cup, which can be screwed onto the pot. To close it depresses a ring of high jumps while opening. A fairly simple and well-known principle that smaller students should get.

The bottle fits incidentally well in the side pockets of a Scout satchel. And if you do not buy here, you get the bottle also in orange, green, yellow, ...

Oh, most importantly, if you fill the bottle with hot tea in the morning, the afternoon is still warm and drinkable. So mote it.