Granite Gear · Waterproof Outdoor Bags
Granite Gear Traditional 3.5 Portage Pack
Likely lower concern, but water-repellent coating treatment source unconfirmed by brand.
Traditional portage pack uses nylon with water-resistant finish. Granite Gear does not disclose PFAS treatment details; water-repellent coating type is unknown.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
nylon pack fabric with water-repellent coating 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 portage pack uses nylon fabric with a water-repellent coating (water-repellent coating) treatment applied to the outer surface. Nylon itself is a stable synthetic polymer with no established leaching risk under normal outdoor use conditions. The water-repellent coating is the only chemical concern: modern water-repellent coating finishes may contain fluorinated compounds (PFAS) or non-fluorinated alternatives, but Granite Gear has not publicly disclosed which type is used on this model.
The brand's record and disclosure
Granite Gear is a Minnesota-based outdoor gear manufacturer with no public record of safety recalls or chemical disclosure statements regarding their packs. The brand does not maintain a published PFAS policy or commitment to phasing out fluorinated treatments. No third-party certifications (Bluesign, GOTS, etc.) are associated with this product line, reflecting the industry norm for technical backpacks.
How it compares in its category
Portage packs in this category universally use nylon or polyester with water-repellent coating treatment; few brands disclose treatment chemistry. Granite Gear's nylon construction is comparable to competitors like Osprey and Thule. The lack of transparency is typical for this product tier, though leading brands have begun committing to PFAS-free water-repellent coating alternatives.
If you buy it
Store dry to minimize need for re-water-repellent coating application, which may involve additional chemical exposure. Wash by hand in cool water with mild soap if needed; machine washing can degrade the water-repellent coating layer. Do not dry-clean (solvent risk) or tumble-dry. Replace when structural integrity fails (tears, seam separation) rather than when water repellency fades, as a worn water-repellent coating layer poses no ingestion or inhalation hazard. Keep away from direct heat sources.
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 degradation and re-treatment chemicals
The fluorinated or non-fluorinated water-repellent coating layer degrades over time and may require reapplication. Commercial re-water-repellent coating treatments often contain higher chemical concentrations than factory finishes. Brand silence on treatment type prevents assessment of whether replacement products will contain PFAS.
Formaldehyde resins in nylon finish
No record of formaldehyde-based finishes in modern nylon backpack production. Granite Gear does not disclose the presence or absence of formaldehyde cross-linkers in their fabric treatment, but this hazard is uncommon in technical outdoor fabrics.
Azo dyes or heavy metal pigments
No recalls or disclosures specific to this product. Nylon packs are typically dyed with modern azo dyes that meet consumer safety limits. Color fastness in outdoor gear is standard but does not inherently indicate hazardous dye chemistry.
Microplastics shedding from nylon fabric
Nylon sheds microfibers during washing and wear, particularly at seams and high-friction areas. This is an environmental concern rather than a direct user safety hazard, but repeated washing releases synthetic fibers into wastewater.
Off-gassing or VOCs from adhesives and seam taping
Seam-sealed packs may use solvent-based adhesives or polyurethane tape. No record of off-gassing complaints for Granite Gear packs, and outdoor use (pack is carried outdoors) minimizes indoor air quality impact.
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 Bags
Granite Gear
Wrought Iron Food Pack
nylon fabric pack, likely uncoated or minimally treated
Food pack likely lower concern; confirm no water-repellent coating with brand.
⚠Risky category by default
More waterproof outdoor bags 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.