Bought this mattress for my 94 year old father. He wanted a new bed after having the same one for 20 years. I agreed. He loves the gel top except when he turns over in the middle of the night the new spot is cold he says. I will fix that with an electric blanket. Interesting the way it comes all coiled up in a circle but bed didn't come for another 4 days so it had time to unfold before we set it up. Thanks O for another great deal!!