New Balance · Sports Performance Undergarments
New Balance Cushion Quarter Socks
Lower concern. Cotton-based socks rarely treated with PFAS.
Standard cotton blend quarter socks with no known water-repellent treatment. New Balance has made no PFAS disclosures for this product, but textile socks typically pose minimal PFAS risk unless marketed as waterproof or stain-resistant.
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Material
Cotton blend, cushioned sole (polyester/rubber)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
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
New Balance Cushion Quarter Socks are primarily cotton blended with synthetic fibers (polyester/elastane) for stretch and durability, with a cushioned sole combining polyester and rubber. Cotton is inherently low-toxicity but synthetic blends may contain residual dyes or processing chemicals. The rubber/polyester sole is subject to potential off-gassing of volatile organic compounds (VOCs) under heat, though socks experience minimal thermal stress during normal wear. Cushioning materials in athletic socks rarely use flame retardants, unlike furniture or sleepwear.
The brand's record and disclosure
New Balance has not publicly disclosed specific chemical-safety testing or certifications for individual sock products. The brand maintains general sustainability commitments but does not routinely publish restricted-substance lists or third-party certifications (e.g., OEKO-TEX) for this product line. No major recalls or chemical-safety controversies specific to New Balance socks have been documented in public safety databases. Industry practice for mass-market athletic socks typically involves minimal transparency on dye suppliers or finishing chemicals.
How it compares in its category
Athletic quarter socks are among the lowest-risk apparel products because they contact skin for short periods and are frequently washed, reducing cumulative exposure to any residual chemicals. Cotton-blend athletic socks are safer than 100% synthetic socks because natural fibers require fewer performance chemicals. Premium alternatives (e.g., certified organic cotton or OEKO-TEX-labeled socks) offer higher assurance of controlled dye and chemical inputs, but conventional brands like New Balance fall into the typical mass-market category with adequate but unverified safety practices.
If you buy it
Wash new socks before first wear to remove residual dyes and processing chemicals. Machine wash in warm water with mild detergent; avoid prolonged direct heat exposure (excessive dryer temperature is unnecessary for socks). Replace socks if elastic degrades or odor persists after washing, signaling breakdown of fibers or microbial colonization rather than chemical hazard. No special storage or maintenance is required beyond standard laundry practice.
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.”
Azo dyes and synthetic dye residues
Cotton-blend socks are typically dyed with synthetic azo dyes; while regulated azo dyes are considered safe, incomplete rinsing can leave residual dyes. Unrestricted azo dyes can break down to carcinogenic amines, but New Balance operates in regulated markets where banned azo dyes are uncommon. New wash before wear mitigates this.
Formaldehyde resins in finishing
Cotton-blend socks may be treated with formaldehyde-based resins for wrinkle resistance or shape retention. Formaldehyde is a volatile irritant but socks are not worn tightly against sensitive areas and washing releases trapped formaldehyde. No specific recalls for New Balance socks on this basis.
Volatile organic compounds (VOCs) from synthetic sole
Polyester and rubber cushioning components can off-gas monomers and plasticizers during manufacture and early use. Socks experience minimal thermal activation, and any VOCs dissipate into air rather than concentrating on skin. Airing socks in ventilation reduces this to negligible levels.
Antimony in polyester fiber
Antimony (a catalyst used in polyester production) can leach in trace amounts from polyester textiles. Athletic socks with limited skin contact and regular washing present no documented risk. No published data suggests antimony leaching from New Balance socks specifically.
Elastane degradation and skin irritation
Elastane (spandex) fibers degrade over time with heat, sweat, and UV exposure, potentially releasing oligomers that may irritate sensitive skin. This is a wear-out issue rather than a manufacturing defect and typically manifests as itching or rash only after months of use in individuals with elastic-sensitive skin.
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 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.