Side sleep pro is a pillow to help support you and your sleeping position. It has a unique shape designed to make side sleeping easier. It should stop you waking up with body aches, soreness or stiffness and will guide your head, neck and vertebrae into natural alignment.
It has mixed reviews but overall seems to help a lot of people with back and neck pain. For more details look here http://www.elderberrydirect.co.uk/side-sleeper-pro-pillow.html