Has not kept what I expected.

I bought in January 2015 my Isosteel VA-9572. Delivery, packaging, everything perfectly.
My choice fell on this product because of the almost positive reviews. Another reason to buy was that I already had from the same manufacturer a thermos.
With this I am so pleased and the coffee is still hot even after 6 hours.
In the cup I can not say this. In January, the temperatures are usually cold and thus the car. That's only hot but after about 1 hour of coffee is not enough for me. Even previous heating with boiling water has not improved the result.
The cup was almost tight and handling and care are also ok
After further research I came across Thermos Insulated Tumbler King and have ordered this. Certainly the price
another (40), which will be rewarded with hot coffee even after 4.5 hours. I have for over a month and a day. In use, and I think I do not switch to another
The Isosteel is only recommended for short-term hot coffee pleasure.