Safe Guard Orthopedic hot pad is licensed and highly advised by Doctors and Physicians for rapid relief of muscle and joint pain, Backaches, Abscesses, Sprains. The heating belt or hot pad consists of a Nicrom chain, a glass tube, a foam, a velvet cloth and a temperature control switch according to the model to provide warmth normally when in bed, but also for the application of heat to a specific part of the body. It does not require water filling and gives immediate relief and has no adverse reactions. This heating pad features 4 layers of insulation on both sides for optimum comfort and also presents an in-built double thermostat, which is 100% shockproof and assures your protection. This is very convenient for the winter as well as you can keep it inside the quilt to warm up the quilt or use it at low temperature to relax body parts.