Women's Bottom Turn Racerback Bikini Top vs Delta Mesh-Insert Halterneck Swimsuit: which is safer?
Patagonia Women's Bottom Turn Racerback Bikini Top is the clear pick. Reiss Delta Mesh-Insert Halterneck 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
Reiss
Delta Mesh-Insert Halterneck Swimsuit
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAzo dyes and heavy metals in pigments
PossibleDegradation and microplastic shedding from thermal stress
PossibleElastic degradation and component leaching
Where these two actually differ
- We flag Elastane (spandex) degradation under heat or chlorine on the Patagonia and not on the Reiss.
- We flag Azo dyes and heavy metals in pigments, Degradation and microplastic shedding from thermal stress and Elastic degradation and component leaching on the Reiss and not on the Patagonia.
- The Patagonia is Nylon/polyester blend with elastane (standard swimwear) where the Reiss is Nylon/polyamide mesh insert and 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: 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