FEATURES: Our Zeus ring in midnight black is for the warrior, the fighter, and the man that pushes every part of life to the limit The Zeus anti-stretch inner-molded band adds form and strength to medical-grade silicone, making this the strongest and most durable ring out there Strong enough to withstand just about anything. Light enough to wear everyday DETAILS: Groove Life.® Ready for Adventure.™ Groove Life's patented design has molded grooves on the inner band that allow air in and moisture out Anti-Stretch technology Made from medical-grade materials Width: 9mm or 23/64" 94-Year ‘No BS’ Warranty