PFAS score
Knix · Sports Bras
Knix Catalyst Front Zip Sports Bra
Lower concern; typical athletic blend with no known PFAS triggers, but brand offers no transparency.
Knix's Catalyst bra is a standard nylon, spandex sports bra with no disclosed water-repellent or stain-resistant coating, the main PFAS risk factors in apparel. Knix does not publicly address PFAS in this product. No independent testing or PFAS-free certification found in public records.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
nylon, spandex, elastane blend
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.