Cup Starter Bundle vs Menstrual Cup Twin Pack: which is safer?
Flex Cup Starter Bundle is our pick: better on PFAS and on the overall hazard picture.
Our pick
Flex
Cup Starter Bundle
PFAS grade
Good 70/100
Overall grade
Good 62/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Medical-grade silicone, no added Teflon-family coating
Confidence
78%
PossibleResidual manufacturing compounds / silicone impurities
PossibleMold or bacterial colonization from improper storage
Saalt
Menstrual Cup Twin Pack
PFAS grade
Good 70/100
Overall grade
Good 54/100
Verdict
Buy
Hazard flags
⚑ 4
Material
Medical-grade silicone (primary); no reported coatings
Confidence
78%
PossibleSilicone degradation over time
PossibleBacterial or mold growth from storage
PossibleAllergic reaction to silicone or additives
Where these two actually differ
- We flag Residual manufacturing compounds / silicone impurities and Mold or bacterial colonization from improper storage on the Flex and not on the Saalt.
- We flag Silicone degradation over time, Bacterial or mold growth from storage, Allergic reaction to silicone or additives and Vaginal irritation from improper fit or insertion on the Saalt and not on the Flex.
- The Flex is Medical-grade silicone, no added fluoropolymers where the Saalt is Medical-grade silicone (primary); no reported coatings, 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