Have only had for a few nights but I finally seem to have bought a firm pillow which is firm. My neck pain has already improved. The height is perfect.  I was prepared for an awful smell after reading the reviews, but it doesn't smell of anything. So far I couldn't be happier.  My only worry is how long before it's flat, I call kill a pillow in 3 months, flat as a board. My husband says I must have a lead head.