The VitalWrap System consists of two components: a control unit and tubing set The control unit, which includes a fluid reservoir, manages the temperature of water used by the system to supply heat or cold to the fabric wrap attached to the body. By pumping the water through a heat-exchanging bladder inside the wrap, the control unit warms or cools the water to match the proper temperature setting, delivering precise and safe thermal therapy. Please purchase your specific wrap seperately from 'Wraps and Accessories' Learn More