I used it exclusively for cold water at work at room temperature. After 2-3 months, the aluminum cracked at the bottom (where the line is down), probably losing its seal and the thermos is no longer functional. Note that it did not hit anywhere to open.

It keeps the water at a temperature, whether cold or hot, for a maximum of two hours. Unfortunately, apart from the fact that the outer material detached from the lid, it does not have a double wall, resulting in not maintaining the temperature of the liquid, whether cold or hot. Therefore, the price is justified

The metal cover of the lid came off, as did the base. The valve needs to be modified so that it doesn't leak water every time the lid is unscrewed.

Everything is good, everything is nice, but there is an issue with the inner lid, liquids leak both internally and around it when I try to put water in the outer lid. Poor design, not a quality issue.

I am very disappointed with my purchase. The positives are: it is an affordable product, but I consider it a waste of money. Secondly, it keeps drinks (water) warm for a satisfactory amount of time. The inner lid is of very poor quality and I have burned myself when trying to pour water into the bottle, half of it spills inside and the other half outside. There is leakage from the button that opens and closes when it is closed. I had read good reviews about the smaller ones and chose to buy it (big mistake), not all products are the same. The purchase was made from the supermarket in my area.