It is very good!!! I use it for French coffee. At 5 hours it is still hot, at 7 hours it starts to become lukewarm when I left it to test it. There is no leakage. I highly recommend it!!!

I got it for my child, for school. The 500 ml is a bit heavy and full for young ages, the 300 ml that I have bought before was just right. It keeps the temperature cold for almost 24 hours!!!! It's worth the money, sturdy construction, it has fallen countless times and it's ok.

After two weeks of use, both of our thermoses inexplicably broke at the bottom. The color also comes off with the slightest impact, but this was expected and does not affect functionality.