Another thing I found extremely helpful was a product called Thermacare Heat Wraps…they are made for neck, back, knees, etc. They are air activated and have adhesive to apply to your body. They last from 8-12 hours – best part you can conceal them under your clothing during the day or leave them on at night and no cords. They are really helpful – you can’t control the heat level but I have found them to be very helpful and convenient to use when I can’t apply a heating pad or plug one in..sleeping is much easier with them on instead of plugging in my heating pad. Hope this is helpful.