I wanted an inexpensive, light-weight mat and this fit the bill. It weighs a mere 1 pound and rolls up and is about the size of a 32 oz Nalgene bottle and it is just enough insulation for me. Mind you, if you are a "cold" sleeper, you probably won't like this, but that is not my case, so it's just right for me.
This review was written in the old system and had content requirements that are different than reviews written today.