Caused pain - didn't help it.
I should have known by reading all the reviews that this product wouldn't work. It doesn't even seem shaped for a neck. Although it did not bother me that it was hard as a rock it did bother me that there is no instructions on how to use it or where to place it. I laid on it for 10 minutes and for a week I could not move my neck and had tons of pain. Super upset that it did exactly the opposite of what it claims to do.
Rating: 1 stars