@dlgreene1 I just use firm pillows. I am a side sleeper, and I have 2 pillows under my chest, and 3 under my head, and a couple between my knees to try to keep my pelvis from twisting. It is trial and error to find the right height, so I don't have pain from my body weight or that my neck gets bent sideways. That seems to produce a muscle spasm that starts my neck vertebrae twisting and gives me a headache. I also have thoracic outlet syndrome which makes my neck tighter on one side and makes me prone to this. I have to keep my shoulder from compressing and producing arm symptoms, and this seems to support my head and my body well, and give me a space to put my shoulder into.