Vasque Men's Sundowner GTX
GTX waterproofing raises concern; no brand PFAS disclosure available.
Vasque's Sundowner GTX uses Gore-Tex membrane for waterproofing, which typically contains PFAS. Brand provides no transparency on PFAS content or alternatives.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Leather/textile upper with Gore-Tex waterproof membrane
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Vasque Men's Sundowner GTX is made of, ingredients and materials
The Sundowner GTX combines leather uppers with a Gore-Tex laminated membrane for waterproofing. Gore-Tex relies on fluorinated compounds (PFAS) to achieve water repellency while maintaining breathability; this is the primary chemical concern in this product. The leather itself is tanned using chromium or vegetable methods depending on batch, and the textile lining is typically synthetic polyester or nylon blends. No formaldehyde-releasing resins are inherent to leather or Gore-Tex construction, though adhesives and finishes may contain trace amounts.
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
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.
PFAS
Gore-Tex waterproofing inherently relies on fluorinated polymers (C6 or C8 per-fluorinated compounds). No PFAS-free version is offered by Vasque for this model; exposure occurs during wear and especially if the membrane degrades or is machine washed.
Source, ATSDR ↗Chromium in leather tanning
If tanned using chromium salts (Cr III), residual amounts may remain in the finished leather. This is a known concern in footwear but is not unique to Vasque. Vasque does not disclose tanning method per boot model, so risk cannot be confirmed as absent.
Azo dyes in textile linings and accents
Polyester or nylon lining and any colored stitching may use azo dyes, which can degrade to aromatic amines if exposed to repeated moisture and friction. Standard textile risk in hiking boots; not reported as a specific issue for Vasque.
What’s reassuring
Adhesive off-gassing from Gore-Tex laminate
Polyurethane or polyester adhesives used to bond the Gore-Tex layer can emit low levels of volatile organic compounds (VOCs) during first use. This effect is typically minimal and dissipates after 24-48 hours of airing out; no documented complaints specific to this model.
Formaldehyde / VOCs
Leather finishing may include formaldehyde-release compounds to improve water resistance and durability, but concentration in finished footwear is not documented for Vasque. Standard leather conditioning and airing during break-in will minimize any residual off-gassing.
Source, ATSDR ↗How is this PFAS grade calculated?
The brand's record and disclosure
Vasque, owned by Red Wing Heritage Company, does not publish detailed PFAS or chemical disclosure statements on their website or product literature. The brand has not announced a phase-out timeline for fluorinated waterproofing membranes, nor have they sought BLUESIGN or similar certifications that restrict PFAS use. No recalls or chemical controversies specific to Vasque footwear have been publicly documented. Transparency on supply chain chemistry remains minimal compared to outdoor brands that have committed to PFAS reduction.
How it compares in its category
Most premium hiking boots in this price range use Gore-Tex or equivalent fluorinated membranes, making PFAS exposure standard across the category. Non-membrane alternatives exist (waxed leather, rubber-lined boots) but sacrifice breathability and comfort. Vasque's Gore-Tex choice is industry-typical rather than a red flag relative to competitors like Merrell, Salomon, or La Sportiva, all of which use similar technologies without explicit PFAS disclosure. The leather quality and construction appear competitive for the price tier.
If you buy it
Wash the boots with lukewarm water and mild soap every 50-100 hours of use to remove dirt that degrades both leather and membrane. Avoid machine washing or prolonged heat (dryers, radiators), which can damage the Gore-Tex laminate. Allow air drying away from direct sun to prevent adhesive breakdown. Re-treat leather annually with neutral shoe cream or wax; Gore-Tex itself does not require re-treatment unless water starts beading poorly, which signals membrane wear. Replace the boots when creasing becomes severe or the sole wears to the midsole layer, typically after 300-500 miles of hiking.
What is not known about PFAS in this product?
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Vasque has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Vasque Men's Sundowner GTX?
- leather, textile, rubber sole
- We found no PFAS statement from the brand
- Volatile organic compounds (VOC) off-gassing from adhesives
- Leather/nubuck upper, synthetic/rubber sole, no coating disclosed
- We found no PFAS statement from the brand
- Azo dyes (leather/textile coloring)
4 hazards checked on this product, all on its full breakdown.
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