Patagonia · Waterproof Sports Gear
Patagonia Men's Trailfarer Shorts
A water-repellent or grease-resistant treatment of unstated chemistry, with a brand PFAS statement we have not verified.
Patagonia says 100% of its new products from Spring 2025 are made without intentionally added PFAS. We record that as an unverified brand claim. Its record describes a water-repellent or grease-resistant treatment of unstated chemistry, which is still counted.
Brand says: “Patagonia says 100% of its new products from Spring 2025 are made without intentionally added PFAS.”
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
nylon and polyester blend with water-repellent coating treatment
Brand disclosure
Brand claims PFAS-free
Lab data
No public lab test
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What Patagonia Men's Trailfarer Shorts is made of, ingredients and materials
These shorts are constructed from a nylon and polyester blend, both synthetic polymers with established safety profiles in apparel. The critical component is the water-repellent coating (water-repellent coating) finish applied to the fabric surface. Historically, most water-repellent coating finishes used PFOA or other PFAS chemicals; Patagonia's stated commitment to PFAS-free alternatives means the treatment chemistry is key. Without public disclosure of the exact water-repellent coating agent used, the safety claim rests on the brand's word rather than transparent ingredient labeling.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
water-repellent coating treatment chemistry uncertainty
Patagonia claims PFAS-free treatment but does not publicly name the specific water-repellent coating agent used. Without third-party verification or detailed product documentation, the actual chemistry cannot be independently confirmed.
Microplastic shedding
Synthetic fiber blends shed microplastics during washing. This is inherent to the material, not unique to Patagonia, and affects all polyester and nylon garments. Use a microfiber-catching wash bag to reduce environmental release.
What’s reassuring
Brand-stated PFAS-free
The brand states this product is PFAS-free. We have not verified the claim.
Formaldehyde / VOCs
Nylon and polyester blends may involve formaldehyde resins in dyeing or cross-linking processes. No recalls or specific hazard reports exist for Patagonia shorts; standard apparel manufacturing does not require high formaldehyde exposure.
Source, ATSDR ↗Heavy metals
Patagonia sources dyes through suppliers that meet restricted substance lists. No reports of azo-dye or heavy metal contamination in Patagonia apparel; the brand's supply-chain standards are well-documented.
Source, FDA ↗Flame retardants
Patagonia Trailfarer shorts are not marketed as flame-resistant and do not require flame-retardant chemicals. No coating hazards from flame retardants are applicable to this product.
Source, EPA ↗How is this PFAS grade calculated?
The brand's record and disclosure
Patagonia has publicly committed to phasing out PFAS in its product line and markets itself as advancing PFAS-free water repellency. However, the company has not published third-party test results or detailed specification sheets for this specific product's water-repellent coating treatment. The brand's track record on environmental and labor practices is strong, but PFAS claims across the industry often lack independent verification. Consumers relying on Patagonia's PFAS-free statement are accepting the brand's self-certification without external confirmation.
How it compares in its category
Most waterproof sports shorts in this price and performance tier rely on either PFAS-based water-repellent coating (the legacy standard) or proprietary alternatives not known to contain PFAS. Patagonia's positioning as PFAS-free is a premium choice; many competing brands either still use PFAS or offer less transparency. The nylon-polyester blend itself is typical and poses no unique hazard versus competitors. The uncertainty lies in the water-repellent coating chemistry, which is a category-wide disclosure gap, not unique to this product.
If you buy it
Wash in cool to warm water with mild detergent and avoid fabric softeners, which can compromise the water-repellent coating finish. Do not dry-clean, as solvents may degrade both the blend and the water-repellent coating. The water-repellent coating finish will gradually wear; reapplication via aftermarket sprays is common after 50-100 wash cycles. If you prioritize PFAS avoidance, contact Patagonia directly for written confirmation of the water-repellent coating treatment chemistry before purchase, as public datasheets do not specify it.
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
- Patagonia has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Patagonia Men's Trailfarer Shorts?
- Woven polyester/nylon blend, no waterproof or stain-resistant treatment specified
- Heavy metals
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Polyester mesh and nylon blend, standard athletic construction
- Formaldehyde / VOCs
3 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonMore waterproof sports gear 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.