Feetures · Sports Performance Undergarments
Feetures High Performance Max Cushion Tab Socks
Lower concern socks; no PFAS-prone features identified.
This wool and synthetic sock lacks water-resistant or stain-resistant coatings typically containing PFAS. No brand PFAS disclosure exists, but material composition poses minimal risk.
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Material
Merino wool blend, synthetic fibers
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Feetures High Performance Max Tab Socks is made of, ingredients and materials
Feetures High Performance Max Cushion Tab Socks combine merino wool with synthetic fibers (typically nylon and elastane in performance blends). Merino wool is naturally antimicrobial and temperature-regulating, reducing reliance on synthetic finishes. The synthetic components add durability and stretch; these are common in athletic socks and not inherently hazardous when produced to standard. No bleaching, heavy metal dyes, or specialty coatings are typical for this product class.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Microplastics
Like all synthetic-blended socks, nylon and elastane fibers may shed microscopically during washing. Merino wool component mitigates this relative to all-synthetic alternatives. Impact is negligible for individual users.
Source, EPA ↗What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Azo dyes in synthetic fibers
Merino wool and standard nylon in athletic socks are rarely treated with hazardous azo dyes in established brands; Feetures has no reported incidents. Standard black or colored performance socks in this price range use compliant dyes.
Formaldehyde / VOCs
Merino wool socks do not typically require formaldehyde-based wrinkle resistance or sizing finishes. No evidence of such treatment in Feetures' product specifications or complaints.
Source, ATSDR ↗Antimony in polyester
Feetures uses primarily nylon and elastane, not polyester, in this blend. Antimony contamination risk is minimal in athletic socks of this type.
Skin irritation from synthetic fibers or dyes
No documented contact dermatitis or allergic reactions linked to this brand or product. Merino wool is hypoallergenic and tolerated well by sensitive skin; synthetics are standard-grade in athletic socks.
How is this PFAS grade calculated?
The brand's record and disclosure
Feetures has no documented safety recalls or public controversies tied to this product line. The brand does not publicly disclose detailed PFAS avoidance strategies (stance marked as silent), but no evidence of intentional water-repellent or stain-resistant chemical use in their socks exists. Standard textile industry certifications (if held) are not prominently advertised on product labels, limiting third-party verification.
How it compares in its category
Performance socks in this category typically range from 50% to 85% synthetic fiber. Feetures' merino wool blend sits mid-to-high in natural fiber content for athletic socks, placing it favorably against purely synthetic alternatives. Brands using heavy water-repellent or moisture-wicking chemical finishes pose higher PFAS and formaldehyde release risk; merino wool's natural properties reduce that need here.
If you buy it
Wash in warm water with mild detergent; merino wool tolerates machine wash if you avoid fabric softeners and excessive heat. Air dry to preserve elasticity and prevent synthetic fiber degradation. Replace socks when cushioning flattens or elasticity visibly fails (typically 1 to 2 years of regular use). No special pre-wash or airing period is needed before first wear.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Feetures has made none
Formulations change between production runs, so check the current label. How we grade.
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.