We have owned this mattress for 2 years. Ii is the saggiest mattress we have ever owned AND the most expensive we have ever owned. The show room model is VERY different that what we actually bought. We are trying to get an adjusment from the dealer and manufacturer, He will be out in the morning, I don't expect a good outcome but I won't stop with just that. I plan to look into the court system for help if we are not taken care of. Bottom Line: I have been to chiropractor, Dr, and had X-Rays done, My Back is killing me and it all started when we bought this SORRY mattress.