I have 2 Back Warmers from Maine Warmers and I love them. I bought them a couple of years ago, use them frequently and they are still in great shape. I keep one in the freezer for soothing bumps and bruises and the other one is microwave ready for when heat is the best remedy. My back loves the gentle heat. I also use a warm one on my abdomen to help me get to sleep on cold winter nights. I love that the corn filling is not scented and produces a gentle, even, long-lasting warmth. I highly recommend Maine Warmers for quality products that work well, look good and hold up to frequent use.