Women's Effortless Essential Square Neck Tankini Top vs Women's Bottom Turn Racerback Bikini Top: which is safer?
Patagonia Women's Bottom Turn Racerback Bikini Top is the clear pick. Nike Women's Effortless Essential Square Neck Tankini Top carries a failing PFAS grade, and we never recommend buying a failing product.
Nike
Women's Effortless Essential Square Neck Tankini Top
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleFormaldehyde resins in fabric finishing
ReportedMicroplastic shedding during wear and wash
PossibleElastic degradation and fit loss
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
Where these two actually differ
- We flag Formaldehyde resins in fabric finishing, Microplastic shedding during wear and wash and Elastic degradation and fit loss on the Nike and not on the Patagonia.
- We flag Elastane (spandex) degradation under heat or chlorine on the Patagonia and not on the Nike.
- The Nike is Nylon/polyester blend (tankini textile) where the Patagonia is Nylon/polyester blend with elastane (standard swimwear), 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 →
More swimwear, see the full ranking