Lightweight stabilizing orthosis for the lumbar spine and lumbosacral transition with muscle-activating and relieving properties. Four, 9 ¼" lightweight, flexible, aluminum stays integrated at the back which can be adapted individually. Easy to put on and take off, features Velcro® fastenings with hand straps. Additional elastic tension straps permit individually adjustable compression and thus variable adjustment of the stabilizing effect. The elastic, breathable product adapts itself to the anatomy and boasts a compact design for maximum comfort. Can be used to treat: Low back pain, Lumbago, Facet Syndrome, Irritation of the sacroiliac joint, Degenerative changes of the spine, Muscular insufficiency, Osteoporosis. Size is determined in inches, by loosely measuring the circumference just below the waist: Size 1 (27.5-31.5"), Size 2 (31.5-35.5"), Size 3 (35.5-39-.25"), Size 4 (39.25-43.25"), Size 5 (43.25-47.25") and Size 6 (47.25-51.25")