I was having trouble sleeping due to reflux. Checked Google for advise. Sleeping with head elevated was recommended. My regular bed pillow is memory foam so I ordered a memory foam wedge pillow. As I use my regular pillow on top of this 7" wedge I don't know if the memory foam version is actually necessary. If you have trouble sleeping due to reflux this is one way to help yourself. Using a wedge as opposed to 2 regular pilllows will provide support for you shoulders. This wedge is comfortable and provides support.