I have now taken the mat with the tents of the festival. They isolated really very good, cold soil is no longer an issue. As written earlier: For side sleepers like me it is however too thin. After the first night my pelvis and shoulder have hurt, according to the second and third get used to it I guess (or the alcohol helped ..). At home I have then several beer stains etc easily with a wet rag again get away. Let dry short, and curled up again. Fits.