OPTPÆs Thoracic Lumbar Back Supportaddresses the entire back, promoting correct sitting posture to help relieve back, shoulder and neck pain. The ôupside-down Tö design promotes a natural curve, with the head above the shoulders; encourages a neutral shoulder position, which opens up the chest; supports and aligns the thoracic spine; corrects the positioning of the lumbar spine bysupporting a healthy lumbar lordosis.