I wanted a thermal pot in winter, so I bought this one on trial to prevent myself from buying an expensive one and then regretting it. There's nothing to complain about in terms of heat retention! The tea I put in around lunchtime was still warm until around 8pm! What I'm not happy about is that it's hard to wash and dry. The water droplets inside the lid of the pot get stuck, and if you want to dry it completely, you have to stand it up and put diatomaceous earth inside, otherwise it won't dry properly. And because my hands don't fit in the small gloves, it's a shame that I have to use a long sponge for water bottles to wash the inside. I bought it cheaply as a trial, so next time I'll buy a wide-mouthed pot that my hands can fit in 💦