Under self-inflating I had actually imagined something else. If you unrolled the pad and opens the valve, while flows briefly air in the pillow, really blown it is not. It is then still relatively flach.Wahrscheinlich is however exactly meant with 50% filling. For me, the pillows in this state, however, is not to be used, even in spite of the filling, which brings the pad. I have it then even further up blows that goes way very easily. But then you can sleep on a pure bubble. The hardness can be adjusted via the air filling. If you have the correct filling found, the cushion is quite comfortable. After use, the valve is re-opened and rolled up, the cushion so that it again loses air. Then close the valve and stow. If you do not close the valve properly, it does not fit in the supplied bag. The surface is pleasant and washable. I always put a towel or other material between them, because that's just pleasant to the skin. Particularly positive I noticed that the pillow smells very neutral. No smell - nothing !!! Very positive! I also enjoy the upbeat appearance.
