GlowGlow TUFF Ring was designed to give a little more "glow" to your TUUF day to day. Made with all clear silicone and mixed with glow in the dark silicone, your ring will pop in the dark TUFF rings are so much more than a silicone ring. They provide a safe, functional alternative to the traditional metal band. It doesn't matter if you are working out at the gym, fixing up your truck or wanting a constant reminder of your commitment to someone special we