Kids' 12-Ounce Insulated Food Jar

I bought the 12 oz food jar to take on hikes and for work lunches. I am so disappointed. I thought paying more for an insulated container would result in a superior and reliable product. However, my experience is that it does not keep food hot or even warm. It is as if there is no insulation value to the jar at all. If I had not waited so long to use it for the first time, and lost my receipt in the interim, it would be going back to the store. Sorry, I really wanted to like this product. Sadly, however, I will not be a repeat customer and will not be recommending this particular product to others.