I sleep on my side and was sleeping with my arm under the pillow and my hand under my face to support my neck no matter how thick the pillow is, and was getting shoulder pain from it. I was very concerned about paying this much for a pillow, and I had purchased a different memory foam pillow (one of those shaped ones for neck support and it didn't work). I don't have to do that with this pillow. I finally thought I would give this one thicker I would give it a try. I love this pillow, I don't have to put my arm under it or my hand under my face. I went on vacation about a week after I got it and missed it the entire time I was gone.