Tynor Ash Brace LargeTynor ASH Brace Large (A 12 Hyper Extension Brace) Tynor ASH Brace Large is an orthopedic hyper extension spinal support brace designed to provide strong immobilization and stability for the thoracic and lumbar spine during injury recovery. It works on a three point pressure system (sternum, pubis, and back region) to help maintain the spine in a slightly extended position. This reduces pressure on the front portion of the vertebrae and supports