The ISO Preferred TLSO with Adjustable Thoracic Support 17” (BA210) provides trunk support and motion restriction extending from the sacrococcygeal junction to above the T-9 vertebra. The 17’’ back plate combined with rigid front and lateral support panels provide intracavitary pressure to reduce load on the intervertebral discs and help provide better tissue healing. The shoulder straps attach to the height adjustable anterior thoracic support bar with quick release buckles making it easy to put on, adjust and remove. An Allen wrench with convenient T-handle is provided to easily shorten or lengthen the anterior thoracic support bar. The rigid lateral panels can be easily angled to provide the best possible fit for a variety of body structures. The TLSO can be used before or after surgery. Waist belts can be trimmed to fit sizes S to 2XL (up to 56” waist). Universal size. For 3XL to 5XL, the Large Kit for this item includes two (2) 9” belt extensions (ISO-BA202 Lumbar Belt Extension: Universal) and fits up to 74” waist.