Women's Bottom Turn Racerback Bikini Top vs Women's Endurance+ Medalist Swimsuit: which is safer?
Patagonia Women's Bottom Turn Racerback Bikini Top is the clear pick. Speedo Women's Endurance+ Medalist Swimsuit 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
Speedo
Women's Endurance+ Medalist Swimsuit
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
Possiblewater-repellent coating finish chemical composition (non-PFAS alternatives not confirmed)
PossibleMicroplastic shedding during use and laundering
Where these two actually differ
- We flag Elastane (spandex) degradation under heat or chlorine on the Patagonia and not on the Speedo.
- We flag DWR finish chemical composition (non-PFAS alternatives not confirmed) and Microplastic shedding during use and laundering on the Speedo and not on the Patagonia.
- The Patagonia is Nylon/polyester blend with elastane (standard swimwear) where the Speedo is Polyester with DWR finish, which is most of the difference in these two grades.
- The gap is 70 points, wide enough that this is not a close call, and the Patagonia is the one to buy.
- We are less certain about the Speedo grade, at 45% confidence against 72%, because it discloses less.
Both products run through the same public rubric, which covers 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 →
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