Boyshort Super Absorbency Period Underwear 2-Pack Womens vs Rubylove First Period Kit +teen Period Underwear: which is safer?
Rubylove First Period Kit +teen Period Underwear is the clear pick. No Boundaries Boyshort Super Absorbency Period Underwear 2-Pack Womens carries a failing PFAS grade, and we never recommend buying a failing product.
No Boundaries
Boyshort Super Absorbency Period Underwear 2-Pack Womens
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
LikelyTeflon-type coating/fluorochemical water-resistant coating (PFAS precursors and compounds)
PossibleMicrofiber shedding from synthetic coating
PossibleBacterial growth under waterproof barrier if poorly maintained
Our pick
Ruby Love
Rubylove First Period Kit +teen Period Underwear
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleCoating degradation and microparticle shedding
PossibleBacterial or fungal growth if improperly stored
Where these two actually differ
- We flag PTFE/fluorochemical water-resistant coating (PFAS precursors and compounds), Microfiber shedding from synthetic coating, Bacterial growth under waterproof barrier if poorly maintained and Coating leaching into skin or bloodstream via absorption on the No Boundaries and not on the Ruby Love.
- We flag Coating degradation and microparticle shedding and Bacterial or fungal growth if improperly stored on the Ruby Love and not on the No Boundaries.
- The No Boundaries is Cotton blend with water-resistant coating where the Ruby Love is organic cotton, waterproof backing layer, which is most of the difference in these two grades.
- The gap is 75 points, wide enough that this is not a close call, and the Ruby Love is the one to buy.
- We are less certain about the No Boundaries grade, at 55% confidence against 82%, because it discloses less.
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 period underwear, see the full ranking