DivaCup Model 0 vs Cup Starter Bundle: which is safer?
DivaCup Model 0 is our pick, better on PFAS and on the overall hazard picture.
Our pick
Diva Cup
DivaCup Model 0
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleSilicone degradation or leaching from improper cleaning agents
PossibleBacterial or fungal colonization from inadequate cleaning or storage
ReportedVaginal irritation or allergic response to silicone
Flex
Cup Starter Bundle
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleResidual manufacturing compounds / silicone impurities
PossibleMold or bacterial colonization from improper storage
Where these two actually differ
- We flag Silicone degradation or leaching from improper cleaning agents, Bacterial or fungal colonization from inadequate cleaning or storage and Vaginal irritation or allergic response to silicone on the Diva Cup and not on the Flex.
- We flag Residual manufacturing compounds / silicone impurities and Mold or bacterial colonization from improper storage on the Flex and not on the Diva Cup.
- The Diva Cup is medical-grade silicone where the Flex is Medical-grade silicone, no added fluoropolymers, which is most of the difference in these two grades.
- The gap is 30 points, wide enough that this is not a close call, and the Diva Cup is the one to buy.
Both products run through the same public rubric, which covers materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More menstrual cups, see the full ranking