Women's Bottom Turn Racerback Bikini Top vs Women's Eco Solid Adult Super Pro Swimsuit: which is safer?
Patagonia Women's Bottom Turn Racerback Bikini Top is the clear pick. Speedo Women's Eco Solid Adult Super Pro 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
Excellent 90/100
Overall grade
Excellent 86/100
Verdict
Buy
Hazard flags
⚑ 1
Material
Nylon/polyester blend with elastane (standard swimwear)
Confidence
72%
PossibleElastane (spandex) degradation under heat or chlorine
Speedo
Women's Eco Solid Adult Super Pro Swimsuit
PFAS grade
Good 65/100
Overall grade
Good 59/100
Verdict
Skip
Hazard flags
⚑ 1
Material
Polyester/nylon blend (standard swimsuit fabric)
Confidence
72%
PossibleMicroplastic shedding from synthetic fiber
Where these two actually differ
- We flag Elastane (spandex) degradation under heat or chlorine on the Patagonia and not on the Speedo.
- We flag Microplastic shedding from synthetic fiber on the Speedo and not on the Patagonia.
- The Patagonia is Nylon/polyester blend with elastane (standard swimwear) where the Speedo is Polyester/nylon blend (standard swimsuit fabric), 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, 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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