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How to find out out a mattress' memory foam grade? 17 Jul 2021 10:24 #1

I am interested in a mattress from ghostbed as it is on trusted members list.
I was going through the articles on this website and it says " 5.0 lbs per cubic foot and higher is considered to be the highest quality, 4.0 - 4.9 is mid-range quality, and 3.0 - 3.9 is lower quality (and only suitable for toppers or lower budget mattresses). Memory foam less dense than this should be avoided".

I can't seem to find out what lbs per cubic foot is ghostbed's mattreess www.ghostbed.com/products/the-ghostbed
I did come across one review that says "This foam has a density of 2 PCF" www.tuck.com/mattress-reviews/ghostbed-mattress-review/

By the mattress underground's own guideline, wouldn't this ghostbed be considered low quality as its PCF is less than 3?

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How to find out out a mattress' memory foam grade? 17 Jul 2021 19:52 #2

Most beds with memory foam on top will usually have a poly foam core and the density ratings for quality on each are not the same.

Memory foam - High quality foam would be 5 lbs/ft3 (PCF)
Poly foam - High quality foam would be 2.5-3 lbs/ft3 (PCF)

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