This reflexpillow has been designed to position your spine in its CORRECT ALIGNMENT while you sleep. While your mattress may support your lower spine, your upper spine (neck area) needs even more support as this is the area where most soft tissue and muscle damage occurs, its also the area that is responsible for a lot of issues with your general health. The key factor to ensuring that the greatest benefit is achieved while you sleep is the position of your head, neck, shoulders and spine.