The Aspen OTS LSO 648 is an adjustable, inelastic spinal brace offering a clinically-tested technology option for patients experiencing low back muscle spasms causing pain. This non-narcotic, non-invasive solution combines support and direct independent compression to promote effective trunk stability, enabling patients to regain activities of daily living. Comfortably fits waist sizes ranging from 28-54 inches, and up to 64 inches with Universal Extension Panel.