Women's Bottom Turn Racerback Bikini Top vs Women's Sea Dive Deep V-Neck One-Piece Swimsuit: which is safer?
Patagonia Women's Bottom Turn Racerback Bikini Top is the clear pick. Seafolly Women's Sea Dive Deep V-Neck One-Piece 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
Seafolly
Women's Sea Dive Deep V-Neck One-Piece Swimsuit
PFAS grade
Bad 20/100
Overall grade
Bad 12/100
Verdict
Skip
Hazard flags
⚑ 2
Material
Nylon/polyester blend with water-repellent coating (water-repellent coating) finish
Confidence
35%
PossiblePFAS in water-repellent coating
PossibleMicroplastic shedding from polyester
Where these two actually differ
- We flag Elastane (spandex) degradation under heat or chlorine on the Patagonia and not on the Seafolly.
- We flag PFAS in DWR coating and Microplastic shedding from polyester on the Seafolly and not on the Patagonia.
- The Patagonia is Nylon/polyester blend with elastane (standard swimwear) where the Seafolly is Nylon/polyester blend with durable water repellent (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 Seafolly grade, at 35% confidence against 72%, because it discloses less.
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