I used it only once, but I'm selling it because I don't have the opportunity to use it anymore. I remember that when I used it, the temperature was 0 degrees Celsius and it was very windy, but I was able to sleep without feeling particularly cold. *Please understand that individual experiences may vary, and as I am a non-professional inspector, there may be small oversights. Please consider purchasing only if you understand that this is a used item. Please understand that returns and exchanges are not possible.