All I can say is amazing!!! I used to wake up with excruciating back pain and wasn’t sure why. I would be groggy throughout the day even after my morning cup of coffee. I changed my mattress out for this baby and boy what a game changer. First off, you will need two people to help you with this.(It’s very heavy) Secondly, it was easy to assemble once I was able to get it out of the jail of a box it came in. Finally, I just cut the bag open once I laid it on my platform and watched magic happen right before my eyes! I now sleep like a baby. Stop thinking about it and just buy it already :-D