Maxi Thick vs O.b Pro Comfort Super Plus 16 pad: which is safer?
Nana Maxi Thick is our pick: better on PFAS and on the overall hazard picture.
Our pick
Nana
Maxi Thick
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleBleach residues and processing chemicals in cellulose
PossibleAzo dyes or colorants in printed or top-sheet materials
PossibleSkin irritation or allergic sensitization from adhesives or synthetic fibers
OB
O.b Pro Comfort Super Plus 16 pad
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleMicroplastic shedding or degradation
ReportedIrritation or allergic sensitization from adhesive or synthetic fibers
PossibleBacterial growth or contamination from prolonged moisture
Where these two actually differ
- We flag Bleach residues and processing chemicals in cellulose, Azo dyes or colorants in printed or top-sheet materials and Skin irritation or allergic sensitization from adhesives or synthetic fibers on the Nana and not on the OB.
- We flag Microplastic shedding or degradation, Irritation or allergic sensitization from adhesive or synthetic fibers and Bacterial growth or contamination from prolonged moisture on the OB and not on the Nana.
- The Nana is cellulose, cotton blend, absorbent core where the OB is rayon/viscose, cotton, and gelling polymers, 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 period pads: see the full ranking