360 RELIEF self heating back support is designed to protect sore stiff muscles and joints. It provides stability to move and work without any restriction. Our Self heated back belt uses 17 strategically placed magnets and metal strips to help boost the healing process.360 RELIEF self heating back support is designed to protect sore stiff muscles and joints. It provides stability to move and work without any restriction. Our Self heated back belt uses 17 strategically placed magnets and metal strips to help boost the healing process.