Intensive moisture therapy nourishes skin and penetrating heat soothes aching joints, relaxes stiff muscles, and eases arthritis and tendonitis pain. New Professional 9 lb capacity unit is up to 25% deeper than previous models. Built-in handles for portability. Worry-free automatic thermostat maintains medically prescribed temperature range of 128 to 132 degrees F. Fully insulated unit is energy efficient, and designed for 24 hour operation. Includes 6lbs of FDA food grade therapeutic paraffin. CE Marked and CETL Listed for quality and safety. Made in the USA. 5-year limited warranty.