PFAS score
Smartwool · Sports Performance Undergarments
Smartwool Men's Run Cold Weather Targeted Cushion Crew Socks
Merino wool is PFAS-risk material; water-repellent coating finish raises concern. No disclosure.
Smartwool uses merino wool, an inherently lower-risk fiber, but applies water-repellent coating water-repellent treatment that may contain PFAS. Brand provides no PFAS disclosure or testing data.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Merino wool 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 Sports Performance Undergarments
Feetures
High Performance Cushion No Show Tab
Acrylic blend sock with no disclosed treatments
Lower concern; no water-repellent coating treatment disclosed for socks.
⚠Risky category by default
Feetures
Elite Light Cushion Tab Limited Edition Performance Socks
Merino wool blend, nylon, elastane
Lower concern. Merino wool socks unlikely to contain PFAS, but brand offers no transparency.
⚠Risky category by default
Feetures
High Performance Max Cushion Tab Socks
Merino wool blend, synthetic fibers
Lower concern socks; no PFAS-prone features identified.
⚠Risky category by default
More sports performance undergarments 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.