Loading... Please wait...Take powder tourmaline, germanium and blend it with medical grade silicone. This blend is then molded into what becomes our bands. Tourmaline is activated by body heat . The band is embedded with a 100% Mylar® hologram. Mylar® is a synthetic material with a property that provides exceptional energy/heat insulation. In fact, all US Coast Guard survival/emergency blankets are made of mylar for this exact reason.