Started to sag after 6 months. $4000 dollars is too much to pay for a mattress that won't last minimum 5 years. My first temperpedic lasted almost 18 years. Just read the warranty on the Breeze and it will ONLY cost me $2000 to replace. This is asinine!!!! I also see you need to turn mattress every two or three months. As you know you can only turn it one way. And you and you wife are in you 70's it is almost impossible with finding someone to help. If this is the new quality I don't think any one in their right mind that new things like this would purchase one of these. I know I won't again. If I only want a mattress for a year there are some good ones out there!