The Ruby Cup is produced in strict accordance with ROHS regulations and has passed SGS quality control. All Ruby Cups (clear and in colours) are made of medical grade silicone and have passed tests according to FDA standards. For coloured Ruby Cups, medical grade liquid silicone rubber (LSR) based dye is used, which has passed the same tests using FDA standards.
The medical grade silicone used is of premium quality, CPSIA compliant (tested for lead and phthalates) and has passed ISO10993 biocompatibility test (biological evaluation of medical devices). The material is hypoallergenic, non-absorbent and contains no harmful additives or chemicals.