I have had my share of experiences with mattresses ranging from those in high-end hotels to my personal mattresses. Of the latter, my last two were waterbed mattresses. The first was the full bladder type. After several years of use, growing discomfort and back pain, I changed to a waveless waterbed mattress. I never could get the mattress to the right firmness without ridges and valleys in the mattress and, consequently, the discomfort and back pains continued. Upon remodeling the bedroom, I decided to trash the waterbed mattress finally and began a search for a comfortable and decent mattress. I read reviews of others, looked for places to try mattresses out and struggle with how to address my wife's needs for firmness while meeting mine. One day my daughter-in-law suggested that I should look into the Purple mattress and mentioned something about an egg test. As I watched the videos, I could believe it was possible. However, the Purple mattress seemed to be the best possible solution. I must admit that being a geek in the sciences, mathematics, engineering and computer science had some influence, too. Our mattress arrived tightly packaged in a roll to which I couldn't believe this was a California King mattress. Amazingly, it expanded to fit the bed frame perfectly! It actually fits the frame far better than either of the waterbed mattresses. The first test of pressing on the mattress from the top was intriguing and surprising, but the sleep test was heavenly impressive! For the first time in a very long time, I was able to sleep through the entire night without needing moments of adjustments---this was just the first night. After several nights of the most comfortable sleep I have had in years, here is what I have found: 1. I sleep through the night as I mentioned earlier. 2. Back pains and leg pains are gone. 3. I don't wake with my limbs numb due to lying on them during my sleep. 4. Coupled with number 3 above, I can sleep through the night, awake fully rested all the while holding my wife all through the night---my arms aren't numb in the morning nor do I feel the need to adjust during the night. 5. My wife is quite comfortable with the mattress---one mattress to fit both needs. 6. It seems that there is less movement during our sleep as I often awake in the same position and place as I started---most likely due to less need for adjustments to be comfortable. These are the highlights. Overall, we awake fully rested without feeling groggy or unmotivated. I have come to love this mattress such that I am considering purchasing one for each of my children and their families. Oh, and by the way, we were tickled to find purple night masks with the mattress. Though we don't use them, it was a nice touch. Truthfully, we use the samples that came with the mattress, too, more to show others how our mattress the construction of the mattress.