LumboTrain effectively stabilizes and relaxes your back. Knitted lumbar support incorporating an adjustable, anatomically contoured silicone insert stabilizes and relaxes the lower back muscles. Silicone insert with raised nodules provides intermittent compression to the soft tissue, leading to increased circulation, and allowing for unicompartmental movement. Intermittent compression stimulates muscle activity which most lower back supports do not achieve. Promotes proprioception, thus heightening sensory awareness in the lower back for increased stabilization. Anatomical knit carries controlled compression graduated at the edges to prevent rolling of the support. Velcro fastenings and hand straps allow for easy application and adjustment, even for people with arthritis. Lightweight, breathable knit will not retain heat and is completely machine washable. Can be used to treat: Low back pain (Lumbago), Back Strain / Back Sprain, Sciatica, Lumbosacral Radiculitis, Degenerative joint disease (arthritis, OA, RA), Lumbrisacral Muscular Instability, Chronic postural disorders, Bone formation disorders, Minor instability of the lumbosacral spine, Muscle strain, Post Trauma Care, Decompression Therapy. 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"), Size 6 (47.25-51.25") and Size 7 (51.25-57")