Peak Design · Waterproof Outdoor Gear
Peak Design Travel Backpack 45L Coyote
water-repellent coating treatment likely applied; brand confirms no PFOA, actual PFAS not disclosed
Peak Design states their backpacks are PFOA-free but does not publicly disclose complete PFAS composition. water-repellent coating water-resistant coatings on outdoor gear often contain other PFAS compounds. No third-party testing available.
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Material
Nylon 6.6, polyester, YKK zippers; water-repellent coating-treated fabric
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 Travel Backpack 45L uses nylon 6.6 and polyester with a water-repellent coating (water-repellent coating) finish, likely fluorine-based given Peak Design's explicit denial of PFOA but silence on other PFAS. Nylon 6.6 is a stable synthetic polymer with no inherent leaching risk under normal conditions. The water-repellent coating treatment is the chemical wild card: it repels water but typically relies on short-chain or non-fluorinated alternatives if PFOA-free claims are genuine, though Peak Design has not published specifics.
The brand's record and disclosure
Peak Design explicitly states no PFOA in their products but does not disclose which water-repellent coating chemistry they use or whether alternatives like PFC-free hydrophobic coatings are standard. The company has not published sustainability reports detailing textile chemical testing or third-party certifications like Bluesign or OEKO-TEX. This selective transparency suggests compliance with legal PFOA bans but leaves uncertainty around other PFAS compounds and legacy practices.
How it compares in its category
High-end technical backpacks routinely use fluorinated water-repellent coating treatments; Peak Design's silence is typical for outdoor gear brands rather than exceptional. Competitors like Osprey and Arc'teryx similarly lack detailed water-repellent coating disclosures. Mid-range alternatives (Decathlon, REI Co-op) increasingly market PFC-free water-repellent coating options, though performance trade-offs exist. Peak Design's nylon and polyester foundation is chemically standard and carries no reported contamination issues beyond the water-repellent coating uncertainty.
If you buy it
Wash occasionally in cool water with mild detergent to remove dust and limit skin contact with water-repellent coating residue; avoid hot water or high heat, which can degrade the finish and potentially release volatiles. Do not dry-clean. Re-apply water-repellent coating every 1-2 years if water beading diminishes; use PFC-free reapplication products to reduce additional PFAS burden. No heating or direct flame exposure; storage in cool, dry conditions preserves material integrity. Monitor zippers (YKK standard) for corrosion and replace if jammed.
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.”
water-repellent coating (water-repellent coating) coating - PFAS class
Peak Design confirms PFOA absence but does not disclose whether polytetrafluoroethylene (Teflon-type coating) or other legacy PFAS are present in the water-repellent coating finish. Fluorine-free alternatives exist but are not confirmed as the standard across this line.
Azo dyes in polyester/nylon fabric
No recalls or public testing have identified restricted azo dyes in Peak Design textiles. YKK zippers and nylon 6.6 from reputable suppliers typically comply with EU/REACH restrictions, though Peak Design does not publish dye chemistry.
Formaldehyde resins in fabric finishing
No established formaldehyde contamination reported in Peak Design backpacks. Nylon and polyester typically require minimal aldehyde-based finishing if water-repellency relies on fluorine chemistry rather than resin crosslinking.
Heavy metals in dyes or hardware
YKK zippers are industry standard and not associated with cadmium or lead leaching. No published test data on fabric dye metals, but mainstream nylon suppliers avoid antimony and other restricted metals under REACH compliance.
Microplastic shedding from synthetic fibers
Nylon and polyester shed microfibers in normal wear and washing. This backpack is not marketed as lower-shedding; washing in a microfiber bag or mesh filter reduces environmental release but does not eliminate it.
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.
Safer alternatives in Waterproof Outdoor Gear
Patagonia
Refugio Day Pack 26L
recycled nylon with non-fluorinated water-repellent coating treatment
Lower PFAS concern. Patagonia claims non-fluorinated water-repellent coating on this pack.
⚠Waterproof or stain-proof treatment
More waterproof outdoor 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.