Chattanooga TheraTherm offers a moist heat therapy in an effective penetrating moist heat pad. The moist heat therapy pack draws moisture from the air thru the special flannel material cover. When the pad is turned on, the moisture passes through the cover increasing the body temperature which then activates the sweat glands creating a natural moisture from the body. It is available in 4 sizes. Provides temporary relief from pain associated with muscle spasm and inflammation 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 person to relax and enjoy without the hassle of maintaining contact with a hand held switch. Therapeutic treatment temperature between 88o and 166o F. Treatment time between 1 and 60 minutes. This item is not returnable once used.