If you lie on your back, you realize the advantage of the best, between soft and hard can be metered well and is comfortable. What prompted me to send back, however, is noise. And not even sure of my pillow, but from my wife. I do not move so much, my wife already. The rippling water is just barely ok. What ever is not going to the bottom, in a kind of plastic must be sewn. The sound is most likely with the blue IKEA bags comparable if one crumples this. So another pillow must be found.
