Groove's Thin Solid ColoRed ring is the heart and soul of Groove. We offer many unique and creative colors, allowing you to pick what suits you best. Our unique and wildly popular Pearl color allows you to stand out among the crowd. Our high-tech grooves provide an unmatched level of breathability and comfort. EngineeRed to keep air in and moisture out, you can't go wrong with this ring. The medical grade silicone keeps your ring flexible while maintaining a durability that other silicone rings can't compete with. This ring is the perfect choice to replace your old metal ring.