Keen · Waterproof Outdoor Accessories
KG's Heavy Duty Silicone Water & Stain Repellent
Unknown silicone repellent coating, no PFAS disclosure from Keen.
Keen does not specify PFAS content in this silicone water/stain repellent. Silicone coatings may or may not contain PFAS; brand transparency is absent. Seek explicit PFAS-free certification before purchase.
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Material
silicone-based water and stain repellent coating on textile
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.
Vague safety claims only
Uses vague language ("eco-friendly", "clean") without a specific PFAS statement.
The full breakdown
What it's made of and why it matters
This is a silicone-based durable water and stain repellent (water-repellent coating) coating applied to textiles. Silicone polymers themselves are considered relatively inert on skin and in normal wear. However, manufacturers often add additives to silicone formulations including catalysts, crosslinkers, and surfactants to improve durability and adhesion; the specific blend Keen uses is not disclosed, making it difficult to assess whether problematic chemicals are present in the final coating.
The brand's record and disclosure
Keen has not publicly disclosed whether this product contains PFOA, PFOS, or other PFAS "forever chemicals" (PFAS), despite industry-wide awareness of PFAS in water-repellent coating coatings since the mid-2010s. The brand does not advertise PFAS-free certification (e.g., bluesign, GOTS, or Cradle to Cradle). This silence on a widely-known hazard class suggests either lack of third-party testing or unwillingness to commit to transparency, both of which increase consumer risk.
How it compares in its category
Most major outdoor brands (Patagonia, Arc'teryx, some Salomon lines) now offer PFAS-free or publicly PFAS-tested water-repellent coating options, or have committed to phase-outs. Keen's lack of disclosure places it behind the transparency curve. Silicone-based repellents are a reasonable alternative to fluorocarbon coatings, but only if the full additive package is known; Keen's silence undercuts this advantage.
If you buy it
Wash treated items separately from untreated clothing for the first 2-3 washes to reduce coating migration. Use cool or warm water (not hot) to minimize leaching of any additives from the coating. Do not tumble dry at high heat; air dry or low heat preserves the coating integrity. If you are concerned about PFAS exposure, contact Keen directly for a full ingredient disclosure before purchase; their non-response will tell you whether transparency is a priority for them.
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.”
Undisclosed coating additives (catalysts, surfactants, crosslinkers)
Silicone repellent formulations require additives to cure and adhere; Keen does not list these publicly. Unknown additives may include organosilanes or other compounds that could leach during laundering or with skin contact.
Heavy metals in pigments or stabilizers
No recalls or public reports link Keen's silicone water-repellent coating to heavy metal contamination. However, some water-repellent coating formulations have historically contained tin or antimony catalysts; Keen's product-specific data is unavailable.
Formaldehyde resins in textile base or finishing
The hazard here is in the underlying textile, not the silicone coating itself. If the base fabric or other finishes (e.g., wrinkle-resistance) contain formaldehyde resins, the water-repellent coating does not mitigate this. Keen does not advertise formaldehyde-free certification.
Coating degradation and microparticle shedding over time
All water-repellent coating coatings degrade with wear and washing. Silicone polymers are not known to form microplastics in the way fluorocarbon coatings can, but the full additive package may shed small particles; data specific to Keen's formulation is not public.
Skin irritation or sensitization from coating residue
No incidents reported for Keen's silicone repellent. Silicone itself is hypoallergenic, but undisclosed additives could theoretically cause contact dermatitis in sensitive individuals; patch testing or contact with brand support is advisable if history of skin sensitivity exists.
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 Accessories
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Stuff sack with no waterproofing treatment.
⚠Risky category by default
Arc'teryx
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Nylon or polyester fabric organizer
Minimal PFAS risk likely, but Arc'teryx provides no public disclosure.
⚠Risky category by default
Sea to Summit
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nylon with silicone water-repellent coating
PFC-free claim stated. No independent verification available yet.
⚠Waterproof or stain-proof treatment
More waterproof outdoor accessories 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.