The Ortho-Back belt has two unique design components that combine to provide immediate relief of back pain and prevent future spasms, strains and pain. The Ortho-Back’s patented lumbar dome with vertical elliptical protrusion configuration, combined with the opposing forces of the front and back plates, correct posture and positively affect the transmission of neurological signals along your vertebrae. You will experience relief from pain, increased blood flow in the lower extremities and the beneficial results of the transmission of neurological acting and reacting signals to the muscles throughout the human body. These features provide lumbar and abdominal support and alignment that is lightweight, comfortable and easily adjustable. The front abdominal support plate is curved to provide a flush support area; the back, or lumbar plate, has a central dome area that has a circular dome vertically bisected by an oblong elliptical elliptical protrusion that fits snugly in the small of the back. As the belt is comfortably tightened with the straps, the opposing pressure immediately begins to relieve compression of the discs and nerves in the lumbar region. This is why so many Ortho-Back users report an almost instant “ahhh” sensation of relief upon putting the device in place. Many Ortho-Back users have reported a sense of rejuvenation and less exhaustion at the end of the day, resulting largely from the alleviation of lumbar compression. As you wear the belt, the patented lumbar dome with vertical elliptical protrusion configuration, which gently applies pressure against the spine, will positively affect the transmission of neurological signals thus relieving upper and lower back aches, as well as pain caused by a compression or irritation of the sciatic nerve. We are confident that the Ortho-Back belt will provide you with the relief from back pain that you are seeking. If you are not completely satisfied with your purchase, we offer a 30 day money back guarantee.