Granite Gear · Waterproof Outdoor Bags
Granite Gear Crown 3 Eco Backpack
water-repellent coating backpack, likely PFAS-treated but unconfirmed by brand.
Granite Gear's Eco backpack uses nylon with water-repellent coating, typical for outdoor packs. Brand does not disclose PFAS status; treatment composition remains unknown.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
nylon fabric with water-repellent coating water 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
The Crown 3 Eco is constructed from nylon fabric treated with a water-repellent coating (water-repellent coating) finish to shed moisture without immediate saturation. water-repellent coating coatings on outdoor gear have historically relied on PFAS (PFAS "forever chemicals") for water-shedding performance, though some manufacturers now offer PFAS-free alternatives. Granite Gear has not publicly disclosed whether this pack uses fluorinated or fluorine-free water-repellent coating, leaving the specific chemical composition uncertain. Nylon itself is stable and does not leach hazardous compounds under normal use, but the water-repellent coating's durability and breakdown products over years of wear are the primary concern.
The brand's record and disclosure
Granite Gear markets the Crown 3 Eco as an environmentally conscious design (suggesting sustainable practices), but the brand has not published transparency statements about PFAS use, flame retardants, or specific water-repellent coating chemistry. No major recalls or documented safety controversies are on public record for this product line. The brand's silence on water-repellent coating composition is notable given industry-wide movement toward PFAS disclosure; competitors like Patagonia and Osprey increasingly specify fluorine-free or PFAS-alternative treatments, making Granite Gear's lack of transparency a relative weakness rather than evidence of a problem.
How it compares in its category
Backpacks in this price and durability tier typically use nylon with some form of water-repellent coating. The Crown 3 Eco is positioned as a mid-range, quality pack; many similarly priced alternatives (e.g., Osprey Atmos, REI Co-op packs) now explicitly disclose PFAS-free water-repellent coating or use wax-based water resistance. High-end competitors have largely moved to transparent labeling, while budget alternatives often remain silent on water-repellent coating chemistry. This pack's lack of clarity is not unusual for its price point but lags behind the category's transparency leaders.
If you buy it
Wash the pack gently with cool water and mild soap; avoid hot water or machine washing, which can degrade the water-repellent coating and potentially increase any leaching risk. Allow it to air-dry fully between uses to prevent mold or odor growth in damp seams. Store in a dry place away from direct heat or sunlight, which can accelerate coating breakdown. If water repellency noticeably declines after 2-3 years of heavy use, consider professional reproofing or replacement rather than applying unverified aftermarket treatments; this also allows you to choose a PFAS-free option at that time.
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 unknown breakdown products
The nylon itself is inert, but the water-repellent coating finish will eventually wear and shed microparticles, particularly at stress seams and with repeated washing. Without brand disclosure, whether this coating contains PFAS or releases other compounds during breakdown cannot be confirmed, making long-term exposure assessment incomplete.
Azo dyes in nylon fabric
No specific reports or recalls document azo dye contamination in Granite Gear packs. Modern nylon production typically avoids restricted azo dyes, but the brand does not publish dye chemistry. Risk of concern is very low for this product category, as nylon dyes do not migrate significantly onto skin during use.
Formaldehyde-based fabric finishes or resins
Nylon does not require formaldehyde-based curing like some cotton or poly-blend textiles. No public records indicate formaldehyde use in Crown 3 Eco construction. This hazard is largely not applicable to this material class.
Antimony in polyester components
The Crown 3 Eco primary fabric is nylon; if polyester webbing or reinforcement is present, antimony used as a polyester catalyst could theoretically be retained in trace amounts. Public information does not flag this concern for this product, and migration onto skin during wear is minimal.
Flame retardant chemicals (if present)
Backpacks are not legally required to carry flame retardant treatments in most jurisdictions, and no evidence suggests Granite Gear applies them to this pack. This hazard is not a documented concern for this product category or brand.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 55% 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.