have owned a few S&F but this one hasn't lasted very long as far as sagging in the middle. I have to get a new mattress quickly as my back is hurting. If I sleep at a nice Hotel, I feel great and have no back pain. Sorry S&F, I paid allot or this mattress and expected it to last longer. the tag states Dina Pammill was the Master Craftsman made in Indiana and also has Eileen Leigh name on it along with the number 5691. Thanks