Just bought this mattress 7/30/09 and the first night the bed caves in where you lye. No support what so ever and lumpy. We were never given a copy of the warranty. We were told by the sales person we have no problem with exchanging this product for any reason. Our backs hurt so bad to where our bodies hurt every morning since buying this $1, 565.01 mattress. You figure for this amount you feel like your sleeping on a cloud. More like rocks. Ortho Mattress people sent out a tech to investigate the mattress and found a 1-1/8 compression on the left and 3/8 on the right and also said the foam was collasped. The company Ortho Mattress denied our replacement and said Simmons will not replace your mattres because it is not over 1 1/2 inches. It is brand new it should not have had any dents or lumps right off the back. I will be taking pictures and speaking with a legal advisor.