Duro-Med Industries" amazing Therabeads microwaveable heat products represent a major breakthrough in moist heat therapy. TheraBeads delivers moist heat safely and effectively. By utilizing the convenience of a microwave oven, TheraBeads provide therapeutic moist heat at the correct temperature levels needed for effective therapy. Full 9"x12" size is ideal for most parts of the body including shoulders, knees and back. Deliver uniform moist heat to help relieve soreness and stiffness. With proper care Therabeads can be used indefinately. Includes wrap cover.