Personalized Fit for All-Day Comfort. The Sierra Hyperextension TLSO is height and width adjustable with tightening control to provide patients with a personalized environment for healing. This TLSO supports from a wide variety of pre- and post-operative spine conditions such as compression fractures due to osteoporosis and trauma. Designed with comfort in mind, the brace's streamlined design and pivoting pelvic bar accommodate movement for effortless all-day wear. Measurements: Small (Pelvic: 23.5 - 29.5 inch, Length: 15.5 - 18 inch), Medium (Pelvic: 29.5 - 35.5 inch, Length: 16.5 - 19 inch), Large (Pelvic: 35.5 - 41.5 inch, Length: 17.5 - 20.5 inch), X-Large (Pelvic: 41.5 - 45.5 inch, Length: 19.5 - 22 inch).