Women's Mexicana Florals Tie-Back Swimsuit vs Women's Bottom Turn Racerback Bikini Top: which is safer?

Patagonia Women's Bottom Turn Racerback Bikini Top is the clear pick. adidas Women's Mexicana Florals Tie-Back Swimsuit carries a failing PFAS grade, and we never recommend buying a failing product.

adidas Women's Mexicana Florals Tie-Back Swimsuit

Adidas

Women's Mexicana Florals Tie-Back Swimsuit

PFAS grade

Good 65/100

Overall grade

Poor 49/100

Verdict

Skip

Hazard flags

⚑ 4

Material

Polyester/nylon swimsuit fabric, likely uncoated or standard finish

Confidence

72%

PossibleAzo dyes and synthetic colorants

PossibleFormaldehyde resins and finishing agents

PossibleMicroplastics shedding

Why this grade

Our pick

Patagonia Women's Bottom Turn Racerback Bikini Top

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

Why this gradeBuy

Where these two actually differ

  • We flag Azo dyes and synthetic colorants, Formaldehyde resins and finishing agents, Microplastics shedding and Elastane (spandex) degradation and leaching on the Adidas and not on the Patagonia.
  • We flag Elastane (spandex) degradation under heat or chlorine on the Patagonia and not on the Adidas.
  • The Adidas is Polyester/nylon swimsuit fabric, likely uncoated or standard finish 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: 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