I bought a Tempur Pedic mattress last month. When I tried the mattress in the store, the firmness was just right. However, when I slept on it at home using an electric blanket, it softened up a lot and was not firm enough . The manager later said never use a heating device on Tempur Pedic because the mattress is temperature sensitive. This was not explained to me before I made the purchase. I would not have bought it had I known the mattress softens up when it gets warmer. Now I am stuck with a mattress that gives me back pain!
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