Yes, nice and cool! The noise only bothers me when I'm worried it will disturb my sleeping spouse, otherwise I seldom notice it any more.
Discussion
I will see if I can find one that's reasonably priced.
This is the one I have. The price has gone way up since I bought mine.
https://sweetzzzmattress.com/products/buckwheat-pillow?variant=42285752713369
Thank you!