Columbia · Waterproof Outdoor Accessories
Columbia Men's Trailborne 2.5L Shell Jacket
Unknown water-repellent coating chemistry; Columbia provides no PFAS disclosure.
Columbia does not publicly disclose the water-repellent coating treatment chemistry on this jacket. Many outdoor shells use PFAS-based treatments; the brand's silence leaves significant uncertainty.
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Material
Nylon shell with water-repellent coating water-resistant treatment
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
This jacket uses a nylon exterior shell treated with a water-repellent coating (water-repellent coating) finish, likely a fluorochemical coating given the price point and performance tier. Nylon itself is a stable synthetic polymer with no inherent toxicity risk when worn, but the water-repellent coating treatment chemistry is the critical unknown. Columbia does not publicly specify whether their water-repellent coating uses legacy long-chain PFAS, short-chain alternatives (like GenX), or newer non-fluorinated options. The 2.5L construction suggests a thin laminate or coating rather than a heavy protective layer, meaning the water-repellent coating finish is essential to function.
The brand's record and disclosure
Columbia has not published a detailed PFAS or chemical management policy visible to consumers, despite growing pressure on outdoor apparel brands to disclose water-repellent coating chemistry. The company has announced some sustainability commitments (e.g., bluesign certification for some products), but PFAS transparency is absent from their public materials. Without direct confirmation, it is impossible to know whether this specific jacket meets emerging non-PFAS standards or relies on conventional fluorinated treatments. This silence is notable compared to competitors like Patagonia and Arc'teryx, which have made public commitments to phasing PFAS in outdoor gear.
How it compares in its category
Mid-range nylon shell jackets from Columbia sit in a crowded market. Competitors like The North Face, REI Co-op, and Decathlon offer similar products with equally opaque water-repellent coating disclosure. Patagonia and Arc'teryx, at higher price points, have moved toward PFAS-free or low-PFAS alternatives, though they do not guarantee zero PFAS in all products. Budget brands and fast-fashion retailers rarely disclose water-repellent coating chemistry at all. Columbia's Trailborne line is positioned as accessible technical wear, which typically means cost-driven material choices rather than premium chemical alternatives.
If you buy it
Wash according to label instructions, using mild detergent and avoiding heat drying if possible (air dry to preserve the water-repellent coating finish and minimize any potential heat-driven leaching). Do not use fabric softeners or bleach, which can degrade water repellency and increase residual chemical shedding. Replace the jacket if the water-repellent coating visibly fails (water no longer beads) or the seams or fabric show wear, as a compromised barrier may expose skin more directly to coating materials. If PFAS exposure is a specific concern, contact Columbia directly to request water-repellent coating chemistry disclosure before purchase.
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.”
Formaldehyde in textile finishes
Nylon shell jackets do not typically require formaldehyde-based resins for wrinkle resistance or water repellency. No recalls or reports of formaldehyde issues in Columbia Trailborne jackets are on record.
Azo dyes
Columbia products are not known to use restricted azo dyes, and the neutral color palette of this shell (typically black, gray, navy) does not suggest high-risk dye chemistry. No specific incidents reported for this product line.
Heavy metals in pigments or hardware
Nylon shells with water-repellent coating coatings do not concentrate heavy metals in pigments. Zippers and other hardware are standard industry components with no known lead or cadmium issues in Columbia jackets at this price tier.
water-repellent coating degradation and microparticle shedding
As water-repellent coating treatments wear over time and with washing, microscopic particles may shed into water or soil. The undisclosed chemistry of Columbia's water-repellent coating means the composition and potential bioaccumulation profile of these shed particles is unknown; this is a use-life concern rather than an acute hazard.
Volatilization of water-repellent coating chemicals during storage or wear
Some fluorinated water-repellent coating finishes can emit volatile compounds, especially when new or if stored in warm conditions. Without disclosure of the specific water-repellent coating formula, inhalation risk cannot be quantified, but it is typically low in field use and mainly a concern in poor storage conditions.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 35% 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.
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Ultra-Sil nylon fabric, no water treatment applied
Stuff sack with no waterproofing treatment.
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nylon with silicone water-repellent coating
PFC-free claim stated. No independent verification available yet.
⚠Waterproof or stain-proof treatment
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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.