Paraffin is able to absorb & retain a great amount of heat. The Therabath takes advantage of paraffin\'s heat-retaining capacity in a simple process called heat transfer. Very simply, the heat that goes into melting the paraffin is released when it solidifies into a custom-fit glove, transferring the heat deep into the affected area. Each dip in a Therabath delivers a layer of fast acting heat therapy-without drugs! Features: Fast-acting Heat Therapy. Soothes Pain & Stiffness. Effective on Arthritis, Joint Stiffness, Muscle Spasms, Inflammation, Sports Injuries and Dry, Cracked Skin. › Long-lasting Pain Relief for Hands, Elbows, Feet, & More. Precise Temperature Control.