The Therapeutica® Sleeping Pillow allows you to sleep on your back and/or side in the correct spinal alignment. We believe that this is the most unique sleeping pillow in the world because the Therapeutica® Sleeping Pillow incorporates two shapes into one pillow. We believe that this is the only pillow on the market that is designed to properly support the spine when people are back sleeping and side sleeping. Since most people sleep in the center of their pillow when they sleep on their backs, the center of this pillow is designed specifically for back sleeping with a unique wedge for upper back support. When people sleep on their side, they sleep on the outside edge of their pillow, so both outside edges of the pillow are designed for side sleeping. The unique density of the foam creates a softness which allows for an extremely comfortable, yet supportive nights sleep.