100% food grade silicone, non-toxic jewelry that is effortless for Mom or Dad to wear and safe and soothing for babies to use as a teething aid. Easily cleans with dish soap or can go in the dishwasher (top rack only, dishwasher basket recommended). Safety tested. Free of BPA, PVC, phthalates, lead, cadmium and metals. Please note these are not intended as toys usage as teether requires adult supervision.