PFAS score
Onia · Swimwear
Onia Women's Michelle One-Piece
Lower concern for a basic nylon swimsuit, but Onia's silence on water-repellent coating/treatment chemistry leaves moderate uncertainty.
The Onia Michelle is a standard nylon one-piece with no public disclosure of water-repellent coatings or PFAS-free claims. Most swimwear does not require fluorinated water-repellent coating unless explicitly marketed as such; however, Onia does not confirm or deny treatment details.
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Material
nylon/polyamide blend swimwear
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
clothing is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 62% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
More swimwear grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.