PFAS score
Underworks · Sports Bras
Underworks Arthritis Hook and Loop Front Closure Sleep and Leisure Bra Women's
Lower-concern basic apparel; no known PFAS trigger, but brand offers no transparency.
This is a standard cotton-polyester blend bra with hook-and-loop closures, no waterproofing, stain resistance, or coatings that typically require PFAS. Underworks does not disclose PFAS practices or hold relevant third-party certifications.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Cotton/polyester blend with hook-and-loop fasteners
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.