Brothers Men's Supima Cotton 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.

Brooks

Brothers Men's Supima Cotton Boxer Briefs

PFAS grade

D 65/100

Overall grade

F 49/100

Verdict

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Hazard flags

⚑ 4

Material

Supima cotton, no surface treatment disclosed

Confidence

78%

PossibleFormaldehyde resins in finishing treatments

PossibleAzo dyes and synthetic colorants

PossibleElastane degradation and microfiber shedding

Why this grade

Our pick

Reebok

Women's Air Tech Performance Brief Panties 6-Pack

PFAS grade

D 65/100

Overall grade

F 53/100

Verdict

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Hazard flags

⚑ 3

Material

nylon, spandex, cotton blend

Confidence

72%

PossibleFormaldehyde resins in fabric finishing

PossibleAzo dyes

PossibleElastomer degradation (spandex breakdown)

Why this 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 waterproof sports & performance undergarments: see the full ranking