With a lowest profile design within the line, the Horizon 627 Lumbar provides essential trunk stability and targeted compression by utilizing the widely-praised SlickTrackā¢ tightening system. One size adjustable, the Horizon 627 Lumbar comfortably fits waist sizes ranging from 24-50 inches, and up to 70 inches with the extension panels. To further support patient recovery, the Horizon braces can be stepped down to the Horizon PRO for treatment of recurring ailments.