This is the lumbar wrap that exerts a gentle yet effective compression to provide support and help relieve back discomfort. The wrap contours to the body and the integrated straps allow you to adjust the level of compression to ensure proper support and optimal comfort during daily wear or while you sleep. The wrap is made from a material that increases subcutaneous temperature by up to 3º F and facilitates blood flow, helping to reduce swelling, improve mobility, and reduce pain in the back. Two stays encourage proper posture and support the natural curvature of the spine. The wrap's lining wicks away moisture and allows the skin to breathe to ensure comfort during extended wear. For a more comfortable fit, order next size up. (5 oz.)