I normally recommend that you avoid this mattress, however it has been discontinued by Simmons. In my opinion it had a design defect as I experienced what has been called a "blow out". The side of the mattress had a large bulge and the top of the side above it was a valley. Simmons has agreed to replace it but I have to pay shipping. As this appears to be a design defect (many other "blow outs" reported for the NXG) Simmons should absorb the shipping cost. I even have to dispose of the defective mattress. It seems that a class action may be the answer.
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