Women's Bottom Turn Racerback Bikini Top vs Wailea One Piece Swimsuit | Black | XL: which is safer?
Patagonia Women's Bottom Turn Racerback Bikini Top is the clear pick. Reformation Wailea One Piece Swimsuit | Black | XL carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Patagonia
Women's Bottom Turn Racerback Bikini Top
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleElastane (spandex) degradation under heat or chlorine
Reformation
Wailea One Piece Swimsuit | Black | XL
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAzo dyes and heavy metals in synthetic dyes
PossibleFormaldehyde resins in finishes
PossibleMicroplastic shedding during washing
Where these two actually differ
- We flag Elastane (spandex) degradation under heat or chlorine on the Patagonia and not on the Reformation.
- We flag Azo dyes and heavy metals in synthetic dyes, Formaldehyde resins in finishes, Microplastic shedding during washing and Skin irritation or sensitization from dyes or finishes on the Reformation and not on the Patagonia.
- The Patagonia is Nylon/polyester blend with elastane (standard swimwear) where the Reformation is Nylon blend swimwear (likely nylon/spandex), which is most of the difference in these two grades.
- The gap is 25 points, wide enough that this is not a close call, and the Patagonia is the one to buy.
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 swimwear: see the full ranking