PFAS score
Outdoor Research · Hiking Pants
Outdoor Research Women's Ferrosi Pants
Skip unless Outdoor Research discloses water-repellent coating chemistry or switches to PFAS-free treatments.
Ferrosi Pants use a water-repellent coating (water-repellent coating) finish typical of outdoor apparel, a category historically reliant on PFAS-based treatments. Outdoor Research has not publicly disclosed whether their water-repellent coating uses PFAS or PFAS-free alternatives.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
nylon ripstop with water-repellent coating finish
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
clothing is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 45% 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.
Safer alternatives in Hiking Pants
Columbia
Women's All Seasons Pull-On Pants
Nylon/polyester blend knit, no stated water-repellent finish
Lower PFAS concern due to basic textile construction, but no brand transparency on treatments.
⚠Risky category by default
Columbia
Men's Stealth Spring Chino Pants
cotton-blend chino twill (no water-repellent treatment noted)
Lower concern, basic chino with no reported water/stain treatment; no lab data or PFAS disclosure found.
⚠Risky category by default
Arc'teryx
Cronin Cotton Pant Men's
100% cotton
Lower PFAS concern, plain cotton twill pant with no waterproofing or stain treatment triggers.
⚠Risky category by default
More hiking pants 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.