It features a 360° embrace fit, medical grade strong support type. Innovative pulley gain system, using power pulley compression module, with linear pressure component, slow step compression, ausiliary cartilage support to fit the lumber spine, dispersed lumber pressure. Plate type waist pad (removable) fit the lumbar spine, reduce spinal pressure, relive disconfort of vertebral process. Constant warm compress waist back, soft warm energy straight to the depth of spine. Upgrade hot pressing process, simple and fashinable appearance, waist protection experience more comfortable and convenient.