ntroducing the new ObusForme Sit-Back Cushion, designed to give support to your lower back or buttock area, whichever you choose at any given time. The Sit-Back Cushion"s flexible, contoured design gives you the choice of using it as a backrest or as a seat cushion, appealing to those with pain in the lower back, buttocks or both. If you experience pain in both their lower back and your buttocks, you can choose to switch it from a backrest to a seat cushion at any time depending on the area in which you are experiencing discomfort.