Brothers Men's Supima Cotton Boxer Briefs vs Women's Air Tech Performance Brief Panties 6-Pack: which is safer?

Where these two actually differ

• We flag Formaldehyde resins in finishing treatments, Azo dyes and synthetic colorants, Elastane degradation and microfiber shedding and Heavy metals in pigments or dyes on the Brooks 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 Brooks.
• The Brooks is Supima cotton, no surface treatment disclosed 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.