Product review (5 stars): Reliably at 40 degrees and highly portable.
I made the choice of this cooler over a dorm sized refrigerator.  I needed some additional refrigerator space, especially when entertaining or having been to farmer's market.  This choice allows portability.  Although we haven't taken THIS one on a trip, we had an earlier model (I don't remember if it was this brand) that lasted with periodic use on the road over perhaps 10 years!  Even used the "keep warm" feature once when taking food to a potluck.  We have to evacuate for hurricanes from time to time and it's really good to be able to take cold food with us on the road and just plug in wherever we find "room at the inn".  Good to have some food along too...we once spent 12 hours to make a 5.5 hour trip and it took the first 4 hours or more to go 30 miles!  I have this sitting on top of a small plastic 3 drawer chest and having it somewhat elevated makes for easier access.  Right now it's full of the pickles and jam, etc. that I took out the frig when we needed room at Christmas.  If I had one complaint it would be that it takes both hands and good strong tug to open it, but I guess that's what keeps it sealed.  I have a thermometer in it and it's reliably at 40 degrees.