PFAS score
ASSOS · Performance Socks
ASSOS Mille Gt Socks
Skip until ASSOS clarifies water-repellent coating chemistry, standard finishes often contain PFAS.
ASSOS Mille GT socks are premium merino wool cycling socks with a water-repellent coating (water-repellent coating) finish, a category historically reliant on PFAS-based treatments. ASSOS provides no public disclosure about their water-repellent coating chemistry or PFAS content.
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Material
Merino wool blend with water-repellent coating treatment
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.
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Smartwool
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Lower PFAS concern for basic wool socks, but no transparency from Smartwool.
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Darn Tough
Men's Run No Show Tab Ultra Lightweight
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Lower concern; natural fiber socks unlikely to contain PFAS, but brand makes no transparency claim.
⚠Risky category by default
More performance 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.