I had a 12 inch origina Hypnial mattress which was fantastic. This was extremely supportive and lasted for approximately 10 years before starting to sag. I replaced it with an Eve mattress, largely because of the advertising hype. It was dreadful and lasted for less than a year. I therefore ordered another Hypnia mattress. It arrived quickly and I absolutely love it. If there is a slight negative, it would be that it can be a little hot. This is easily solved by opening a window. I thoroughly recommend Hypnia.
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