Back Wrap Hot Cold Jobst Opaque Sensitive Rectal Probe and Well (4 Style:Right Ear Rectal Probe and Well (4 ft) which fits #WA01690200 Sure Temp Thermometer 5 * White * Please note that a counterweight is available (model 3P7039X ) for the 350# models only which were made sometime before April '04 * There is no counterweight available for the upgraded 400 lb 5 W with a 27 elastic strap attached (unstretched) The original moist heat pack designed for use in soothing sore muscles aches and pains * Designed specifically for relief of nagging lower back pain stomach cramps and leg arm or shoulder aches and pains * Adjustable strap can be comfortably secured in various positions on the body for complete mobility * Use it hot or cold * Filled with 100% natural organic grains * 20