バトルクリーク機器177 4インチのx。小柄thermophore関節炎パッド17 thermophore designed for the neck, sinus or tmj area, our petite thermophoreテつョ pack is also wonderful for applying moist heat therapy to specific joints - such as the elbow, knee or ankle.;the 17 x 4 unit with a long velcroテつョ fastener allows adjustment for a snug fit on any small area.;thermophore classictm deep-heattm pack is designed with a special hand-held switch;just press for heat, release to cool and alternate as often as you like;if you happen to doze off and your hand relaxes, the unit will cool as a safety feature.