chemically activated cold gel packs for medical purposes; chemically activated hot gel packs for medical purposes; chemically activated cold compresses for medical purposes; chemically activated hot compresses for medical purposes; cooling patches for medical use; elbow braces for medical purposes; elbow guard for epicondylitis; elbow guards for medical purposes; heating cushions, electric, for medical purposes; electrically heated pads, for medical purposes; heating pads, electric, for medical purposes; instant heat wraps in the form of chemically activated heat releasing packs for therapeutic use; ice bag pillows for medical purposes; ice bags for medical purposes; medical cooling apparatus for treating heatstroke