Just don't buy it. Too soft, squishy and has NO support. I allowed this to decompress for over 3 weeks in a spare room so that was not the problem. I hate this 'thing"; and it's like sleeping in a pile of sand. Hard to shift or turn while sleeping even with a tight fitted sheet over it. Has been giving me a backache as well. What a rip off. I do not believe this is a 4.3. I have a 5.5 - 2" Cloud9 memory foam and found it a bit too stiff. This is so much different as too be mushy soft. My other one was a bit too firm but this is horribly soft, no support. Seems strange to me the huge difference in feel. Well, won't bother with this Accu anything again. Wasted my money on this and it turned dark yellow just sitting in a spare room decompressing. From white to dark yellow on one side, what is that about? And it still has a strange odor. Not horrendous, but it's unpleasant.
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