These new microwave wheat wraps are proving very popular to help with the aches & pain caused by arthritis, lumbago, rheumatism, menstrual pain & a variety of sports injuries. They can also relieves symptoms of migraine headaches, stress & tension. To soothe aches & pains: Place the heat wrap in a microwave & heat on full power for a maximum two & a half minutes (based on 900 watt oven). Your heat wrap will stay warm for up to one hour. Allow to cool fully between uses. Place the heat wrap against any part of the body (not near sensitive skin or open wounds) for quick, soothing relief. Can be used as a cold compress. Place in a sealed plastic bag & freeze for at least two & a half hours. Ideal for treating external bruising & swelling.