Using patented technology developed for NASA, this is the back wrap that adjusts to body temperature to help keep the treated area cool or warm. The support’s fabric is imbedded with millions of invisible microcapsules that absorb excess heat when you are hot and release the stored heat when you are cold, ensuring comfort while providing back support. The support wraps around the lower back, shifts the abdomen out and the shoulders back, discouraging slouching and encouraging proper posture to help relieve back pain. Two elastic bands in the lumbar region provide support to the spine and the support adjusts to fit waists 28" - 60" and stays in place via two straps with hook-and-loop fasteners. Made from a blend of cotton, polyester, and elastic. One size fits all. Imported.