My wife and I were looking forward to our new mattress that would improve our sleep and help with my wife's sciatica.  We were some what disappointed our sleep improved minimally and did nothing for my wife's sciatica.  The mattress was listed as firm, it wasn't it sank on the edges giving you the feeling that you falling out of bed.  We previously purchased an Iser 10" medium/firm gel memory foam mattress for our guest room and it is twice as firm.
Disappointed