Women's Sunny Tide One-Piece Swimsuit vs Women's Eco Solid Adult Super Pro Swimsuit: which is safer?
Speedo Women's Eco Solid Adult Super Pro Swimsuit is our pick: better on PFAS and on the overall hazard picture.
Patagonia
Women's Sunny Tide One-Piece Swimsuit
PFAS grade
Bad 20/100
Overall grade
Bad 0/100
Verdict
Skip
Hazard flags
⚑ 4
Material
Nylon/polyester blend with water-repellent coating treatment
Confidence
45%
LikelyPFAS in water-repellent coating
ReportedSynthetic microfiber shedding
PossibleFormaldehyde resins in yarn finishing
Our pick
Speedo
Women's Eco Solid Adult Super Pro Swimsuit
PFAS grade
Good 65/100
Overall grade
analysis pending
Verdict
pending
Hazard flags
none flagged
Material
Polyester/nylon blend (standard swimsuit fabric)
Confidence
72%
Where these two actually differ
- We flag PFAS in DWR coating, Synthetic microfiber shedding, Formaldehyde resins in yarn finishing and Degradation of coating over time on the Patagonia and not on the Speedo.
- The Patagonia is Nylon/polyester blend with DWR treatment where the Speedo is Polyester/nylon blend (standard swimsuit fabric), which is most of the difference in these two grades.
- The gap is 45 points, wide enough that this is not a close call, and the Speedo is the one to buy.
- We are less certain about the Patagonia grade, at 45% 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