Gregory · Waterproof Outdoor Gear
Gregory Nano 24 Backpack
Gregory does not disclose PFAS use or testing. Skip until clarified.
Gregory Nano 24 uses water-repellent coating treatment on nylon, a common PFAS application. Brand makes no public PFAS disclosure or third-party verification.
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Material
Nylon/polyester with water-repellent coating finish
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 Gregory Nano 24 uses nylon and polyester fabric with a water-repellent coating (water-repellent coating) finish applied to the exterior. water-repellent coating coatings are typically fluorocarbon-based (PFAS) or occasionally fluorocarbon-free alternatives, but Gregory does not publicly specify which. Nylon and polyester themselves are stable synthetics with low leaching risk during normal use, though polyester can shed microfibers during washing and wear.
The brand's record and disclosure
Gregory Mountain Products has not published chemical transparency reports, PFAS testing data, or commitment to fluorocarbon-free water-repellent coating finishes as of available public records. The brand does not appear on major textile transparency indexes (Greenpeace Detox, Fair Wear Foundation certifications) regarding chemical management. This silence is typical of mid-tier outdoor gear makers but leaves water-repellent coating composition unconfirmed.
How it compares in its category
The Nano 24 is competitively positioned in the daypack segment. Competitors like Osprey, Patagonia, and some Gregory models now offer fluorocarbon-free or PFAS-low water-repellent coating options, though disclosure remains sparse across the category. Most traditional nylon backpacks in this price range share the same water-repellent coating opacity issue, making Gregory typical rather than exceptional on hazard transparency.
If you buy it
Wash the pack infrequently and in cold water without detergents that increase surface wear, as this limits both microfiber shedding and accelerated coating breakdown. Avoid direct heat (dryers, direct sun for extended periods) as it can degrade synthetic fibers and coatings. Inspect seams and water-repellent coating finish annually; if coating flakes or peels noticeably, consider spot repair or replacement. Store dry in a cool location to preserve water repellency.
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.”
Polyester microfiber shedding
Polyester content sheds microfibers during washing and abrasion. Gregory does not disclose fiber content percentages or microfiber reduction measures; shedding magnitude depends on weave tightness and wash frequency, both user-controlled.
water-repellent coating degradation and leachate
Gregory does not specify water-repellent coating chemistry (fluorocarbon vs. fluorocarbon-free). If fluorocarbon-based, degraded or damaged coating could release residual PFAS-related compounds during extended water contact; if fluorocarbon-free, risk is lower but unconfirmed.
Formaldehyde resins in dyes or fabric finishing
No recalls or public health alerts specific to Gregory Nano 24 for formaldehyde. Nylon and polyester may contain trace formaldehyde from production resins, but modern outdoor gear typically uses low-formaldehyde dyes; risk is not established for this product line.
Azo dyes or restricted colorants
Gregory does not disclose dye standards or restricted substance lists. No specific contamination reports exist for this model. Industry standard for outdoor packs typically excludes banned azo dyes, but confirmation requires brand testing data.
Heavy metals in pigments or hardware
Zippers and buckles may contain trace metals (nickel, cadmium), but this is not specific to Gregory and is universal in fabric bags. No recalls or warnings on file for the Nano 24; risk is standard for the category and typically minimal during normal use.
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.