Magic heat packs. A multipurpose reusable heat pack which is safe and non toxic. Provides instant heat, is an excellent stress reliever, provides therapeutic relief for aches and pains and great for keeping warm during outdoor activities and sports. Historically, heat has been a natural remedy used to both relieve pain and enhance the recovery process. Heat therapy increases blood flow, which helps decrease stiffness, relaxes sore muscles and provides soothing comfort. These instant heat packs, unlike disposable ones, are reusable over 10,000 times.