The material of this pillow does not help in the relief of my neck pain, I feel that the worse as the pillow is hard and heavy, and its shape memory prevents movements of the head, gold I move a lot at night. He tends to lock the head, which is amplified my neck pain, and besides, it is not really suitable for people who sleep on their side because it crashes too in that position. On the back is relatively good, but when you're not the type to stay asleep quiet ... I am afraid some damage because of this particular matter.
That said I do not question the good majority experience that others have with this particular pillow. It is a matter of trial and what is suitable for you. The product is of a certain quality, quite recognizable. I found a latex pillow much more suitable for me that does not block the head and my pains have almost completely faded, and I gave it to someone ... who finds nights and awakenings serene.
Everything is a matter of personal need.