I bought this pillow at 9 cm high variant for my waterbed. I sleep for a month now and it'm super happy. A 7 cm high version might still be ideal for a waterbed, because supine it is permanently a little high but I sleep anyway almost only in the lateral position. Here it is top. It is super soft, adapts to the body immediately, not as slow as viskoseelastischer foam with memory effect. As you turn in bed it feels like the rest of the waterbed. I sleep really since much quieter and no longer turn myself so often. When I turn, I do not have to adapt again to the sleeping position the cushion. I am much ausgeschlafener.Bisher morning I slept on a very flat Dinkelkissen, which I am no longer come in the previous deal. Due to the return control of 14 days, I have to order dare this pillow because I had bought before in a Locally dealer a viskoseelastisches pillow, which I can not handle came, but I did because it is a hygiene item no longer able to give back. This is around here now. These pillows here is not cheap, but it's really worth the money issue.