Feeling is subjective. To me it feels like a very firm pillow. Kind of like a soft sack of cement. You shape it and it keep that shape more or less. Almost no sinking in. You can still root around and move your mask.
I can not "feel" the hulls. They will make a soft (crinkling?) sound when you move around/turn over. Does not bother me in the slightest.
Weird is putting up with leaks bad enough to effect your sleep/cause less than the best therapy results
possible.