FLA Orthopedics - 11" Deluxe Lumbar Sacral Back Support helps reduce strain and relieves lower back pain. Featuring durable construction with a contouring fit, this back support is easy to wear and stabilizes the lumbar sacral areas. Made of strong perforated vinyl with a soft cotton lining for comfort. Sizes: Medium (32"-42"), Large (38"-48") and X-Large(44"-54"). Sold by the each.