An aching back is one of the most common reasons for visits to the doctor. About 80% of the population has periods of back pain at some point in their lives. The pain can often go away by itself, but sometimes the back needs support to relieve the pain. A back support or posture vest provides stability and relieves tense or cramping muscles, while contributing to natural position and posture. Choose a back orthosis that suits your needs and your body shape.