Product Overview How To Wear: Undo the velcro side pulls and position around lower back. Secure the velcro front tab. Pull side straps forward and secure to desired level of compression to flatten lordosis. Applications: Pain in the lower back muscles and joints; spondylosis; facet joint dysfunction; mild spondylolisthesis, spondylolysis; inter-vertebral disc herniation; ligamentous disorders or back muscle strain; postural hypotension due to cervical spinal cord injury; after lumbar laminectomy or discectomy Sizing Chart: Measure Around Waist S 56 - 71cm M 69 - 84cm L 81 - 96cm XL 94 - 109cm XXL 107 - 122cm XXXL 120 - 135cm Provides intra-abdominal pressure against spinal instability Metal stays support back muscles, prevent undesired motion range 55% nylon/40% polyester/5% rubber; cold water wash, air dry