IMMEDIATE RELIEFE PAIN - Great for pain stemming from kyphosis, osteoporosis, bad posture, hyperextension, spinal compression fractures, spinal stenosis, mechanical back pain, and more. MECHANICAL PULLEY SYSTEM : Through the high strength of the horse line and two mobile pulleys with the role of easy to stretch the thin line and play a role in tightening the waist, generate abdominal compression that relieves pressure multiplies your force by five. TLSO FULL BACK BRACE - According to the curve of human lumbar spine, Supports your back and holds the spine straight, protecting you from movements that could derail your recovery from a mid- or low-back injury. BREATHABLE & COMFORTABLE: Made from breathable materials with soft padding, , and a spinal cutout make the TLSO comfortable to wear. Fastener and quick-release buckles make it easy to put on, take off, or adjust the brace. CHOOSE YOUR SIZE: Using a soft / flexible tape measure, find the circumference of your waist at its narrowest point, in inches.