Men's Featherweight Performance Boxer Briefs vs Women's Air Tech Performance Brief Panties 6-Pack: which is safer?
Reebok Men's Featherweight Performance Boxer Briefs is our pick: better on PFAS and on the overall hazard picture.
Our pick
Reebok
Men's Featherweight Performance Boxer Briefs
PFAS grade
D 65/100
Overall grade
F 57/100
Verdict
Skip
Hazard flags
⚑ 2
Material
polyester and elastane blend
Confidence
72%
PossibleAntimony in polyester synthesis
PossibleMicroplastic shedding during washing
Reebok
Women's Air Tech Performance Brief Panties 6-Pack
PFAS grade
D 65/100
Overall grade
F 53/100
Verdict
Skip
Hazard flags
⚑ 3
Material
nylon, spandex, cotton blend
Confidence
72%
PossibleFormaldehyde resins in fabric finishing
PossibleAzo dyes
PossibleElastomer degradation (spandex breakdown)
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 waterproof sports & performance undergarments: see the full ranking