Marmot · Waterproof Outdoor Gear
Marmot Eiger 32 Backpack
Backpack likely uses water-repellent coating treatment; Marmot silent on PFAS specifics.
Marmot Eiger 32 uses nylon with water-repellent coating finish typical of outdoor packs. Brand does not publicly disclose PFAS avoidance or coating chemistry, creating moderate uncertainty around water-repellent coating composition.
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Material
Nylon fabric with water-repellent coating water-repellent coating
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 Eiger 32 uses nylon fabric, a durable synthetic polymer resistant to tearing and abrasion. The water-repellent coating (water-repellent coating) coating is the key concern: most commercial water-repellent coating treatments historically relied on long-chain PFAS (PFOA, PFOS), though some manufacturers have shifted to fluorine-free or short-chain alternatives. Marmot has not publicly disclosed which water-repellent coating chemistry they use on this model, leaving the PFAS content uncertain.
The brand's record and disclosure
Marmot (owned by Vista Outdoor) does not maintain a transparent public position on PFAS use in their products or a phase-out timeline. The brand has not sought third-party certifications like Bluesign or OEKO-TEX that would independently verify absence of restricted chemicals. This silence is common in the outdoor apparel industry but limits buyer confidence in chemical safety.
How it compares in its category
Most mid-range hiking backpacks use nylon with water-repellent coating treatments; the Eiger 32 is typical in this regard. Brands like Patagonia and Arc'teryx have moved toward fluorine-free water-repellent coating and publish clearer chemical policies, while many competitors (including Marmot) offer no such transparency. The backpack itself is not an outlier in hazard profile, but the category-wide lack of disclosure means informed choice is difficult.
If you buy it
Store the backpack in a well-ventilated area for the first week to off-gas any volatile compounds from manufacturing or coating. Avoid washing frequently; spot-clean stains with plain water or mild soap to preserve the water-repellent coating treatment and minimize skin contact with coating chemicals. Replace the backpack after 5-7 years of heavy use or if the water-repellent coating visibly degrades (water no longer beads); degradation does not create an acute hazard but signals loss of water resistance and potential for older coating materials to shed. If you have concerns about PFAS, contact Marmot directly to request water-repellent coating specification data before purchase, or consider brands with published fluorine-free commitments.
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 chemistry (PFAS-adjacent, non-PFAS details)
Nylon backpacks almost always carry a water-repellent finish; Marmot's water-repellent coating type is not disclosed. While PFAS is the primary concern (graded separately), unknown coating chemistry may include other fluorinated or non-fluorinated polymers that off-gas or leach under stress or moisture.
Formaldehyde resins in fabric finishing
Nylon backpack fabrics are sometimes finished with formaldehyde-based resins for shape retention or dye fixation. No recalls or published safety warnings specifically for Marmot Eiger models are on record, and modern brands typically comply with EU and US limits; however, Marmot provides no independent test data.
Azo dyes in colored fabric or trim
The Eiger 32 is available in multiple colors (gray, red, blue variants). Azo dyes can release carcinogenic amines under certain conditions, but they are restricted in the EU and most US manufacturers. No specific recall or violation is on record for Marmot backpacks.
Antimony in polyester accents or thread
If the backpack uses polyester zippers, webbing, or thread (common in blended trim), antimony may be present as a catalyst residue. Exposure risk from a backpack is low unless the wearer has prolonged skin contact with unsealed cut edges; Marmot does not disclose antimony levels.
Coating degradation and particle shedding over time
After 5-7 years or heavy weathering, water-repellent coating coatings on nylon can flake or peel. Inhalation of coating particles is unlikely during normal wear, but degradation may increase leaching of coating residues into sweat or water in contact with the fabric.
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.