Back & Lumbar Support Cushions Suitable for: 1. Provide a higher degree of thoracolumbar spinal support and relief from a wide range of indications from acute back pain to post-ative support. 2. Keep thoracolumbar spine straight. 3. Prevention of hurt again. 4. Restriction of Patient rotation. 5. Rectify the posture. 6. Treats Mid and low-back pain stemming from kyphosis, osteoporosis, bad posture, hyperextension, spinal compression fractures, spinal stenosis, mechanical back pain and more. You can use it at many stages of treatment-including before and after surgery. Its great for men and women (adult) Material: Using High quality PE board to polymerize new materials with superior breathable composite fabric . Adjustable Size: Waist And Height Can Be Adjusted - Separate design is adopted, and the size can be adjusted freely with screw fixing, which can accurately protect the injured position. the size can be adjusted according to your own size,the size of the screw hole can be adjusted at will. Two function type for choose: # normal style: without Chest support board # strengthen style: with Chest support board Size: S: suit for waist Below 85cm/33.4inch ; Abdominal support plate 22cm/8.66inch; Back support plate 43cm/16.9inch L: suit for waist Above 85cm/33.4inch ; Abdominal support plate 22cm/8.66inch; Back support plate 48cm/18.9inch