Assertion: foam's density | /r/HasAspect | basic value
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Source sentences:
text: So while I do think density does has some basic value in that I’ve found that low density memory foam (below 4-lb memory foam) doesn’t have the feel or comfort of 4-lb or higher memory foam, all 4-lb memory foams are not the same for comfort and the only way to really assess this is by having real people try it and assess it as we have in our tests.