Salomon · Sports Performance Undergarments
Salomon Men's Aero Ankle 2-Pack
Merino socks likely treated for moisture management; PFAS status unclear.
Salomon does not disclose PFAS use in these merino blend socks. Moisture-wicking treatments may contain PFAS, but no public data confirms this specific product.
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Material
Merino wool blend with moisture-wicking 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.
The full breakdown
What it's made of and why it matters
Salomon Aero Ankle socks are a merino wool blend designed for moisture management in athletic use. Merino wool itself is a natural protein fiber with inherent moisture-wicking properties, but 'moisture-wicking treatment' typically indicates a water-repellent coating (water-repellent coating) or antimicrobial finish applied to the fabric. These finishes are often fluorocarbon-based (PFAS) or, less commonly, silicone or paraffin alternatives. The blend composition (exact percentage not typically disclosed by Salomon) affects durability and heat retention; higher synthetic content increases risk of microfiber shedding during washing.
The brand's record and disclosure
Salomon (owned by Amer Sports) does not publicly disclose fabric treatment chemistry or provide independent third-party certifications (e.g., bluesign, GOTS, or OEKO-TEX) for their textile lines as standard practice. The brand has no documented public commitment to phasing PFAS in apparel. No recalls or safety actions specific to Salomon socks have been recorded, but silence on chemical inputs is not equivalent to absence of concern. Competitors in the premium athletic sock space increasingly publish treatment disclosures; Salomon's lack of transparency is a notable gap.
How it compares in its category
Premium merino socks ($20-40 range) typically use similar water-repellent coating finishes without disclosure. Brands like SmartWool (Bridgedale) and Darn Tough offer comparable performance; SmartWool does not routinely disclose treatment chemistry either, though Darn Tough emphasizes US manufacturing and durability guarantees. Salomon's athletic positioning and price point are mainstream; they are neither leaders nor laggards in transparency. The 2-pack format suggests commodity pricing rather than premium positioning, reducing likelihood of premium chemical choices.
If you buy it
Wash in cool water and tumble dry low to minimize synthetic fiber degradation and reduce any residual treatment release. Replace when elastic fails or cushioning compresses (typically 12-18 months of regular use). Do not use fabric softener or bleach, as these can degrade fibers and mobilize coating residues. If you have sensitive skin or chemical sensitivities, wear for shorter periods initially (e.g., one workout) to monitor for irritation before routine use.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
water-repellent coating (water-repellent coating) finish chemistry (likely PFAS)
Moisture-wicking treatment on merino socks almost certainly involves a water-repellent coating finish. Salomon does not disclose whether this uses legacy PFAS (C8 or longer), newer shorter-chain PFAS (GenX, PFOA alternatives), or non-fluorocarbon chemistry. Industry trend toward short-chain PFAS suggests possible exposure, though severity is low in direct skin contact vs. inhalation or ingestion.
Formaldehyde resins in finishing
Merino wool blends sometimes receive wrinkle resistance or antimicrobial finishes using formaldehyde-releasing agents. No public record of formaldehyde use in Salomon socks specifically, and merino's natural properties reduce need for such treatments. Risk is low but not ruled out without chemical disclosure.
Azo dyes in synthetic blend components
If the synthetic portion uses conventional nylon or polyester, azo dyes are possible; however, athletic socks typically use minimal or deep-bath dyeing that avoids restricted azo classes. No recalls or complaints on record for Salomon socks related to dye toxicity or color bleeding.
Microfiber shedding from synthetic blend during washing
Merino wool blends typically contain 20-50% nylon or polyester; washing releases microfibers with each cycle. This is a general textile hazard, not brand-specific, but blend composition affects magnitude. Salomon does not specify fiber percentage, making quantification impossible.
Antimicrobial finish (metal salts or silver compounds)
Some moisture-wicking treatments include antimicrobial agents (zinc, copper, or silver nanoparticles) to prevent odor. Salomon does not advertise antimicrobial properties for Aero Ankle, suggesting this is unlikely, but not confirmed absent.
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
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Merino wool blend, nylon, elastane
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Merino wool blend, synthetic fibers
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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.