I am leery of any foam support where the density of the top layer is more than the support layer. 3.60 over ~1.25 seems to be extremely that.
I see mattresses sold now with three densities in separate layers so you can shuffle them. Great sales gimmick, bad idea!
Who would buy a plain old “Natural Flex” pillow when they could be either captivated or exhilarated by their pillow? Although being exhilarated by my pillow does sound a little disturbing.