Patagonia · Waterproof Outdoor Gear Storage
Patagonia Black Hole MLC Cube
water-repellent coating-treated pack; Patagonia avoids PFAS but not explicitly verified here.
This nylon cube pack uses water-repellent coating for water resistance, a category historically linked to PFAS. Patagonia has moved away from PFOA but does not publicly confirm PFAS-free status for this specific product.
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Material
Nylon fabric with water-repellent coating (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
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 MLC is constructed from nylon fabric treated with a water-repellent coating (water-repellent coating) finish. water-repellent coating coatings historically relied on PFAS compounds (perfluorinated chemicals) to achieve water resistance, though many brands have shifted to PFAS-free alternatives in recent years. Nylon itself is stable and non-toxic under normal use, but the identity and safety profile of Patagonia's specific water-repellent coating treatment is not publicly disclosed.
The brand's record and disclosure
Patagonia has a well-documented commitment to environmental responsibility and has publicly stated a preference for PFAS-free water-repellent coating treatments in some product lines. However, the company does not explicitly specify whether the Black Hole MLC uses PFAS-free or legacy PFAS-based water-repellent coating chemistry in product documentation available to consumers. This silence is notable given competitor brands (Arc'teryx, The North Face) have begun transparency on water-repellent coating chemistry; the lack of clear labeling suggests caution is warranted.
How it compares in its category
Nylon packing cubes are broadly similar across brands in material choice. Patagonia's reputation for durability and repairability is above average; the brand offers repair services that extend product life, reducing replacement frequency. Many competitors use identical nylon-with-water-repellent coating construction without better disclosure, making this product representative of the category rather than exceptional in safety transparency.
If you buy it
Avoid exposing the pack to high heat (dishwashers, dryers, direct sunlight prolonged periods) as nylon can degrade and potentially release microfibers. Hand wash with cool water if cleaning is needed; the water-repellent coating will gradually wear and diminish water resistance over 2-3 years of heavy use. If PFAS exposure is a personal priority, contact Patagonia directly to request explicit water-repellent coating chemistry verification before purchase, as this information is not standardly disclosed.
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 treatment chemistry (PFAS status unconfirmed)
Nylon packs typically receive PFAS-based or PFAS-free water-repellent coating coatings. Patagonia has not publicly confirmed which type is used on the Black Hole MLC, creating uncertainty about potential long-term PFAS exposure from water-resistant finishes.
Microfiber shedding from nylon fabric
Nylon textiles can release microfibers during wear, washing, and degradation. While the pack itself is not ingested, microfiber release to the environment is a known concern for synthetic textiles, especially if the product is washed frequently or damaged.
Dye migration or colorant leaching
No established reports of problematic dye leaching from Patagonia nylon packs. Patagonia does not use heavy-metal-based dyes in their standard nylon products, and black coloration typically uses carbon-based pigments with low leaching risk.
Degradation of coatings over time
water-repellent coating coatings naturally degrade with use and washing. As the coating breaks down, the underlying nylon may become exposed; if water-repellent coating contains PFAS, degradation could theoretically increase surface exposure, though risk to the user from a packing cube is minimal.
Formaldehyde resin in fabric finishes
No evidence that Patagonia uses formaldehyde-releasing resins in nylon treatments. The brand is certified by bluesign and Responsible Wool Standard, which restrict formaldehyde use; nylon products typically avoid such finishes.
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.
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⚠Brand says nothing about PFAS
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⚠Waterproof or stain-proof treatment
More waterproof outdoor gear storage 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.