We bought this mattres thinking we would never have to buy another. I had always herd you get what you pay for. So being seniors went spent more than we ever had to buy a Kingsdown matterss. Close the top of the line.We loved it the first few years, then came the sagging. Not just a little dip but it felt like you were in a hole. the middle stayed up the way in should be, but my side dipped some my husbands side sunk down deeply. I read the warrenty it said it did'nt cover body impression. So I didn't think contacting the co. would... read full review »