Sleeping on a rock-hard surface might be uncomfortable only because it’s flat. Can a hard surface that is custom fit to the shape of your back be actually comfortable?


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Sleeping on a rock-hard surface might be uncomfortable only because it’s flat. Can a hard surface that is custom fit to the shape of your back be actually comfortable?
Sleeping on a rock-hard surface might be uncomfortable only because it’s flat. Can a hard surface that is custom fit to the shape of your back be actually comfortable?


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