Overall the Helix mattress is good. Two reasons why I gave it four stars instead of five : 1) It is a hot mattress. I prefer to sleep cool, but this mattress retains heat and is warmer than other mattresses I’ve owned in the past. 2) This mattress is HEAVY! The mattress was delivered to my doorstep, and it was up to me to get it upstairs to my bedroom. For the price, I think this is ridiculous. I had to hire movers to set up my Helix, and even they were surprised how heavy the mattress was.