Large Microwave Heating Pad, Neck and Shoulder Wrap approx 9" X 26" Use for Aches and Pains, or just to pamper after a long hard day. Place in Microwave for 1-3 minutes. Be careful when removing from microwave and applying to body. Also use as "ICE PACK" place in plastic bag and leave in freezer for on hour. Sectioned for even heat or cold distribution Did you know... that doctors and chiropractors recommend Heat Therapy, for the relief of back pain caused by strain or over-exertion from hard work or exercise. Heat and Cold Therapy are often used in combination, to get the relief you need, as in a sports injury where you may have pulled muscles and they have become inflamed. In this situation applying cold therapy slows the blood flow to that area , which reduces inflammation and swelling