PFAS score
The North Face · Waterproof Hiking Socks
The North Face Hiking Crew Socks
Lower concern, socks are not typical PFAS-application products, but no brand transparency.
Hiking socks are made from natural fibers (merino wool) and common synthetics (polyester, nylon) with no known water-repellent coatings requiring PFAS. The North Face does not publicly disclose PFAS use or absence in this product line.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Merino wool blend / synthetic fibers (polyester, nylon)
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 waterproof hiking socks 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.