Keep the temperature of the contents for up to 8 hours regardless of the surrounding temperature. I will definitely buy for the rest of the family members, especially now that it is summer and cold water is essential.

It is the same as the one I have purchased in 700ml without the white coating, which for inexplicable reasons, despite appearing to be of good quality construction, fails to keep water with ice cold for more than half an hour. Additionally, the stainless steel exterior sweats incredibly, resulting in it getting wet wherever it touches.