Lumbar support is a cushion that is place between the back of the spinal column and the seat. The lumbar support helps to keep the spine in an upright position, preventing pressure points from forming due to prolonged sitting. Also, the lumbar support is an excellent tool for those who suffer from disc disease. Use a lumbar support or a pillow to cushion your buttocks while sitting in a car or on public transit. These supports can also be found in many living rooms as a decorative piece to help support the back.