I am having trouble finding complete specifications on the "major" different brands of foam mattresses (visco or latex/other). Is there a web site that provides this info? I have gone to Company websites and consumer review websites, but the most complete information I have gathered, so far, is on the Tempur-Pedic, which is not surprising. I found a site with ILDs for several, but it appeared dated without the numbers for some major brands that are now offering foam mattresses.

These are the Specs I wish to compare:

Density - lbs per sq foot --- of ALL the layers of foam that comprise the mattress, not just the top layer.

ILD Rating (Indentation Load Deflection) or IFD (???)

Is Foam rated Highly Resilient (HR)? Y/N

Thanks in advance for any directions in finding this info.

Best,

LooKout_n_c