PFAS score
Knix · Sports Bras
Knix Intimates & Sleepwear Catalyst Sports Bra Knix
Lower concern, basic athletic textile blend with no waterproofing or stain treatment disclosed, but verify final garment details.
Knix's Catalyst Sports Bra is primarily nylon and spandex without marketed water-repellent or stain-resistant finishes, suggesting lower PFAS risk than treated performance fabrics. Knix has not publicly disclosed PFAS content or water-repellent coating treatment specifics for this style.
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Material
Nylon, spandex, polyester blend (no water-repellent or stain-resistant treatment disclosed)
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 72% 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 sports bras 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.