Theratherm Digital Moist Heating Pad provides temporary relief from pain associated with muscle spasm and inflamation caused by strain and tension. Digital hand control allows operator to program and monitor temperature/treatment time. Lockout mode protects against inconsistent changing of the control settings throughout treatment. Allows patient to relax and enjoy therapy without the hassle of maintaining contact with a hand held switch. Therapeutic treatment temperature between 88 degrees and 166 degrees F. Treatment time between 1 and 60 minutes. Available in 3 sizes. Small 7" x 15" , Medium 14" x 14" and Large 14" x 27".