Men's Go-Dry Cool Performance Boxer Briefs vs Women's Air Tech Performance Brief Panties 6-Pack: which is safer?
Reebok Women's Air Tech Performance Brief Panties 6-Pack is our pick: better on PFAS and on the overall hazard picture.
Old Navy
Men's Go-Dry Cool Performance Boxer Briefs
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAzo dyes and synthetic colorants
PossibleAntimicrobial finishes (unspecified)
ReportedMicroplastic shedding
Our pick
Reebok
Women's Air Tech Performance Brief Panties 6-Pack
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleFormaldehyde resins in fabric finishing
PossibleAzo dyes
PossibleElastomer degradation (spandex breakdown)
Where these two actually differ
- We flag Azo dyes and synthetic colorants, Antimicrobial finishes (unspecified), Microplastic shedding and Formaldehyde in fabric finishing on the Old Navy and not on the Reebok.
- We flag Formaldehyde resins in fabric finishing, Azo dyes and Elastomer degradation (spandex breakdown) on the Reebok and not on the Old Navy.
- The Old Navy is polyester/nylon blend performance fabric where the Reebok is nylon, spandex, cotton blend, 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 sports performance undergarments: see the full ranking