Compared to other brands, I was very pleased with this cup holding temperature. However, the slit/hole where you put your mouth to intake the fluid from the cup is too wide. Especially when you have to tip it up to get the bottom third of the liquid drank. It flows out both sides of the mouth and down the front of our shirts every time. We don't have this problem with other brands.
Very impressed, I made a full cup of coffee and couldn't finish it and put the cup in the fridge. 3 hours later after coming home and the coffee was still warm.