The present invention is cold, onjjimjil relates to the possible protective bags waist tightly at the waist part of your waist protective bags but detachably to a rigid form of the fixed plate, the thermoelectric semiconductor module is attached and integrated to the heat conductive plate with a good thermal conductivity of aluminum using a thermoelectric semiconductor elements (the Peltier device) is connected with the power supply controller receives from the outside to the front of the fixed plate Configure the hayeoseo the waist bottom formation, the lumbar support function that can give good thermal conductivity beneath the plate that connects the spinal cord at the waist and hips back forming the back rest when worn with a wide range of bags stretched back to the right and at the same time so that the exercise, using a heating and cooling effect of the thermoelectric semiconductor elements according to which to change the direction of the current supplied to the thermoelectric semiconductor module attached to the thermally conductive plate is formed by adjusting the rear controller constituting the waist bottom Optionally, cold, cold onjjimjil to enable this, onjjimjil quality features that can be demonstrated to a combination of high quality cold, onjjimjil will put its purpose as convenient to use as possible by providing a protective waist bags. cold of the present invention for achieving the object as described above, the possible onjjimjil waist protection bags are formed with a large width by using the same material as the default, and spandex, buckle or Velcro tape to the leading end (called Velcro) 11 waist of the handle bars to be made to a variety of waist shape wearing protective bags (10), velcro tape on the back contact portion of the waist protection bags 10 111 or buckle, or any other variety of coupling means jidoe made of a removable back-rest which is formed so as to be (100), the back rest 100 is Velcro tape 111 or any other varie
