Model 2 vs Cup Starter Bundle: which is safer?
Flex Cup Starter Bundle is our pick: better on PFAS and on the overall hazard picture.
Diva Cup
Model 2
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleSilicone degradation and surface microtearing
ReportedBacterial biofilm formation if improperly maintained
PossibleVaginal or cervical trauma from improper use
Our pick
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 and surface microtearing, Bacterial biofilm formation if improperly maintained and Vaginal or cervical trauma from improper use 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 (body); no fluoropolymer coatings reported where the Flex is Medical-grade silicone, no added fluoropolymers, which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
Both products run through the same public rubric: 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