Smartwool · Sports Performance Undergarments
Smartwool Men's Run Zero Cushion No Show Socks
Lower concern. Merino wool socks unlikely to contain intentional PFAS.
Merino wool with nylon reinforcement are both inherently PFAS-free materials. No water-repellent coating or stain treatment is reported, reducing PFAS risk significantly.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Merino wool blend, no reported water-resistant treatment
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Smartwool has made none
Formulations change between production runs, so check the current label. How we grade.
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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.