I reviewed this mattress before buying be cause i thought the foam would break down. Most reviews were rated high. I had it about 3 years and have turned it over and flipped it around. Each side is now broken down. The center is like a hump with our sleeping space in a hole. I do not recommend this mattress for every night use. Our weight is around or less than 200 IBS.
I've had this mattress for 5 years....I'm 230lbs, my wife is no bean pole and it still sleeps like the day I got it. I'm about to buy an Camper and will be buying a queen to fit it......I'm spoiled, I can't sleep on any other mattress....I just lay awake tossing and turning....my wife says I have ruined her.....she can only sleep on this mattress.....We can not say enough....ignore the negitive reviews....buy a firm not a soft because this firm is more of a medium firmness in comparison to the name brand firm......which is no better than this baby for a fraction of the cost.
After 4 years, this mattress has started to lose it's firmness. Sad because it really was great for the first few years. Now I find myself rolling into my husband's side. Flipping it doesn't help anymore. So if you want this to last you longer than 4 years, probably not the best way to go.