Women's Bottom Turn Racerback Bikini Top vs Zahara Bikini Top: which is safer?
Patagonia Women's Bottom Turn Racerback Bikini Top is the clear pick. Reformation Zahara Bikini Top 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
Zahara Bikini Top
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAzo dyes and colorant toxicity
PossibleFormaldehyde resins in finishing
PossibleMicroplastic shedding during laundering
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 colorant toxicity, Formaldehyde resins in finishing, Microplastic shedding during laundering and Elastic degradation and allergen exposure on the Reformation and not on the Patagonia.
- The Patagonia is Nylon/polyester blend with elastane (standard swimwear) where the Reformation is Nylon/polyamide blend, no water-resistant treatment noted, 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