Can any Rep or someone with actual experience with the premium memory foam and sheepskin options, comment on the differences between the 2 types? There is some discussion here and there but it seems that it is mostly people judging from the picture and the product description doesn't describe either, which I find a bit silly...
KelvinLSheepskin gives a little more low and highs. The Fenestration on fenestrated sheepskin helps reduce reflections, so you hear "more" of the true sound. Hope that helps! It is of course subject to the different model of headphone as each one is tuned differently.