Maine Warmers are a life saver in the cold! I was apprehensive of the black sheep warmer my sister-in-law had and didn’t think it could really do much to warm me in the negative temperatures. I was pleasantly surprised!! The warmer was literally a miracle when the heat went out and we were all shivering. Just a few minutes in the microwave go an absurdly long way and kept us warm for hours. We ordered one to take back to Richmond with us and can’t wait to order more for us and also for others as gifts. These warmers are truly amazing!