Patagonia · Waterproof Outdoor Gear Storage
Black Hole Cube 6L Patagonia
Patagonia silent on PFAS; water-repellent coating likely contains fluorochemicals.
Black Hole Cube is a durable ripstop nylon pack with water-repellent coating (water-repellent coating) coating. Patagonia discloses no PFAS information; water-repellent coating treatments typically contain PFAS-based chemicals.
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Material
Ripstop nylon with 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
other 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 Black Hole Cube is ripstop nylon, a tightly woven polyamide fabric prized for tear resistance and light weight. The water-repellent coating (water-repellent coating) coating applied to the surface is the material concern: Patagonia does not publicly disclose whether this coating contains legacy fluorochemicals (PFOA/PFOS) or newer fluorine-based alternatives. Ripstop nylon itself is chemically stable in normal use; the risk is in the surface treatment and any off-gassing during manufacturing or storage.
The brand's record and disclosure
Patagonia is known for environmental advocacy and repair-first messaging, but has not published a comprehensive PFAS elimination roadmap or disclosed water-repellent coating chemistry for its gear lines. The company offers free repairs and a worn-wear guarantee, extending product life and reducing replacement frequency. However, this does not address the original fluorochemical exposure during production or the eventual disposal burden. Patagonia's silence on PFAS specifics contrasts with some competitors (Arc'teryx, for example) who have committed to PFAS phase-out timelines.
How it compares in its category
Nylon packing cubes are a commodity; most budget and mid-range brands use ripstop nylon with untested water-repellent coating coatings. Patagonia's version is more durable and repairable than disposable alternatives, which offsets some lifecycle concerns. Polyester-based packing solutions exist but offer no chemical safety advantage. The real differentiation is Patagonia's repair culture, which reduces the frequency of replacement, a practical way to lower cumulative PFAS exposure across a user's lifetime.
If you buy it
Do not machine wash or dry-clean, as heat and surfactants can degrade the water-repellent coating and potentially mobilize residual fluorochemical residues. Spot-clean with cool water and mild soap; air dry flat. Store in a cool, dry place away from direct sunlight to slow degradation. Monitor seams and edges for wear; Patagonia's repair service can extend life 5-10 years. If you discard it, check local textile recycling programs; Patagonia's worn-wear program may also accept used items for refurbishment.
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.”
Fluorochemical water-repellent coating (non-PFOA/PFOS)
Patagonia does not disclose water-repellent coating chemistry. Modern water-repellent coating coatings often use shorter-chain fluorocarbons (such as GenX or other replacements) which are less bioaccumulative than legacy PFOA but are still persistent in the environment. Residual fluorochemical content is not publicly tested for this product.
Nylon microfiber shedding
Ripstop nylon can shed microscopic fibers during use, washing, and storage, particularly if the water-repellent coating degrades. This is not unique to Patagonia but inherent to the material class. Shed fibers are not captured in laundering small items and may accumulate in household dust.
Formaldehyde or azo dyes in fabric finish
No public recalls or testing reports specific to Patagonia nylon packing cubes for formaldehyde resins or azo dye contamination. However, these are used in some nylon finishing processes; Patagonia does not transparently disclose dye or finish chemistry for this product.
Coating degradation and leachability over time
water-repellent coating coatings on nylon naturally degrade within 1-3 years of use, especially with washing. As the coating breaks down, any residual fluorochemicals or processing residues may become mobilized. Patagonia's warranty does not address chemical safety of degraded coatings.
Off-gassing of volatile organic compounds (VOCs) from new material
New nylon gear can emit volatile compounds during manufacturing and initial storage. The smell or fume risk is typically low in a packing cube, but users sensitive to chemical odors may notice this upon unboxing. Airing the product outdoors before first use may reduce exposure.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 35% 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.
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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.