HOKA · Hiking Shoes & Trail Runners
Hoka Men's Speedgoat 6 GTX
GTX waterproofing likely contains PFAS; Hoka discloses nothing
Hoka Speedgoat 6 GTX uses GORE-TEX, a Teflon-family coating waterproof membrane historically associated with PFAS. No brand disclosure on PFAS composition or safer alternatives available.
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Material
Mesh/textile upper with GORE-TEX GTX waterproof membrane
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
The Speedgoat 6 GTX uses a mesh textile upper (likely polyester or nylon blend) laminated to GORE-TEX, a polytetrafluoroethylene (Teflon-type coating) membrane. GORE-TEX's water-repellent and breathable properties depend on fluorochemical surface treatments, which typically involve long-chain PFAS compounds. The mesh itself is a standard high-performance synthetic; the waterproof layer is where chemical concerns concentrate.
The brand's record and disclosure
Hoka (owned by Deckers) does not publicly disclose chemical composition, PFAS use, or fluorochemical treatment details for its footwear. The brand has no published commitment to phase out PFAS or adopt safer waterproofing alternatives. This contrasts with competitors like Salomon and The North Face, which have begun transparency initiatives on fluorochemical footprints in some product lines.
How it compares in its category
Trail running shoes with GORE-TEX are standard in the premium segment, and nearly all use PFAS-treated membranes. Non-GORE-TEX waterproof alternatives (waxed canvas, polyurethane coatings) exist but sacrifice breathability. The Speedgoat 6 GTX is typical in this trade-off; it does not stand out as a lower-hazard choice within its performance class.
If you buy it
Rinse shoes after exposure to mud, water, or salt to reduce potential for PFAS leaching during cleaning. Avoid machine washing or high-heat drying, which can stress the GORE-TEX laminate and theoretically accelerate degradation. Replace when tread wears or the membrane delaminates (typically 300-500 miles). Store in a cool, dry place; PFAS compounds are stable but off-gassing is minimized in low humidity.
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.”
Fluorochemical PFAS in waterproof membrane
GORE-TEX textile laminates rely on long-chain PFAS or legacy PFAS alternatives for durability and hydrophobicity. Direct skin contact during normal wear poses low acute risk, but contamination of laundry water and eventual environmental persistence are documented concerns. Hoka's lack of disclosure prevents assessment of which specific PFAS chemistry is used.
Formaldehyde resins in textile finishes
No recalled or publicly reported formaldehyde or formaldehyde-releaser contamination in Hoka footwear. Standard durable-press finishes on performance mesh are generally low-risk; formaldehyde off-gassing from fresh footwear is not a known issue in this product line.
Azo dyes in colored mesh upper
Hoka does not disclose dye sourcing or azo-dye testing. The Speedgoat 6 is sold in standard colors (gray, navy, etc.); restricted azo dyes are banned in EU and Japan, and major footwear brands typically avoid them. No recalls or safety alerts are on record for this model.
Antimony in polyester content
Antimony trioxide is occasionally used as a catalyst in polyester production but is typically bound into the polymer and does not leach during normal wear. No health incidents or contamination alerts are known for Hoka polyester uppers.
Adhesive and laminate degradation over time
GORE-TEX lamination relies on polyurethane or acrylic adhesives. Delamination (separation of the membrane from the upper) can occur after 300-500 miles or with age. Degraded adhesive does not pose a direct toxicity hazard but compromises waterproofing and can trap moisture, increasing odor and mold risk.
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.
More hiking shoes & trail runners 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.