Unfortunately these pillows did not work for me, I gave them a committed try for 6 months, but in the process earned terrible cystic acne from using the buckwheat. I tried two sizes of the pillows. I found I slept somewhat better, but the pillows are very hard (it became a game of buckwheats in the pillow, buckwheats out of the pillow every few weeks) and I still experienced neck pain/stiffness. I personally would not recommend, and am now on another search for the perfect pillows.