Malta One Piece vs Women's Bottom Turn Racerback Bikini Top: which is safer?
Patagonia Women's Bottom Turn Racerback Bikini Top is the clear pick. Mikoh Malta One Piece carries a failing PFAS grade, and we never recommend buying a failing product.
Mikoh
Malta One Piece
PFAS grade
Good 65/100
Overall grade
Poor 49/100
Verdict
Skip
Hazard flags
⚑ 4
Material
nylon/spandex blend swimsuit fabric
Confidence
55%
PossibleAzo dyes in color fastness
PossibleFormaldehyde in resin finishes
PossibleSpandex degradation and microfiber shedding
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
Where these two actually differ
- We flag Azo dyes in color fastness, Formaldehyde in resin finishes, Spandex degradation and microfiber shedding and Allergic contact dermatitis from dyes or finishes on the Mikoh and not on the Patagonia.
- We flag Elastane (spandex) degradation under heat or chlorine on the Patagonia and not on the Mikoh.
- The Mikoh is nylon/spandex blend swimsuit fabric 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