Abstract: An apparatus for applying heat and/or cold to a body and, in particular to a wearer's chest, and for allowing relatively easy application and removal of the device while further allowing for relative mobility of the wearer the apparatus having an elongated section having a outside side and an underside and including a first pocket attached away from the center of the elongated section toward a first end of the elongated section and a second pocket attached away from the center of the elongated section toward a second end of the elongated section and further having a first packet held in the first pocket, the first packet being capable of maintaining a temperature and a second packet held in the second pocket, the second packet capable of maintaining a temperature. Methods of utilizing the apparatus are described.