Non Wired Sports First Bra vs Reversible Seamless Sports Bra: which is safer?
These two grade almost identically. Pick on price and preference; neither has a PFAS edge.
Marks & Spencer
Non Wired Sports First Bra
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAzo dyes and synthetic colorants
PossibleFormaldehyde in textile finishing resins
PossibleElastane degradation and microfiber shedding
Marks & Spencer
Reversible Seamless Sports Bra
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAzo dyes (colorants)
PossibleFormaldehyde resins (finishing agents)
PossibleElastane degradation and microfiber shedding
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 bras: see the full ranking