I have unfortunately used as the sole base, which was not very comfortable, but it's not done, as too thin.
At the lake, the mat has served well as dressing room and lounge area. Night in the tent she was converted into a sleeping mat. Class!!!
Roll along the first time you had (n) a little too rough, and a portion of the mat is torn when "Compress". But what more is not tragic, because they can be easily stick.
All in all a buy recommendation! Many areas of application in which the mat is doing good phone!