Relax the Back is a specialty neck and back store in Mt. Pleasant, SC. We carry zero-gravity chairs, mattresses, pillows, ergonomic office equipment and more. Our staff is trained in spinal health and anatomy to help select the best product for you. Relax the back.. with a twist! We have just introduced a new chair to our Zero Gravity lineup,,, and it swivels! Now you can move and get the benefits of Zero Gravity.. all from one chair.