Abstract: A cooling and heating blanket comprising a blanket enclosure with heating means including a plurality of flexible elements positioned within the enclosure for being electrically energized for supplying heat to the enclosure, such that the enclosure may be retained above room temperature, and cooling means including a plurality of flexible fluid carrying conduits positioned within the enclosure through which a heat transfer fluid can flow, such that the enclosure may be retained below room temperature. Control means including an electric motor and a pump driven thereby located remotely relative to the enclosure is provided with flexible conduit means connecting the enclosure and the cooling means, and regulating means is operatively associated with the heating means and the cooling means.