Keen Review, Is Keen Non-Toxic?
Keen averages 52 out of 100 on PFAS Authority's PFAS and toxin screen across the 10 Keen products graded as of October 2026, and none of them reach its 70 point pass mark.
Keen grades Good on our four-band scale. On disclosure, the brand says nothing publicly about PFAS. See what every brand has published about PFAS for how that compares.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
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Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
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- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
Does Keen have PFAS, by category
Which Keen products contain PFAS? Poor and Bad, we’d swap these
- EVA foam, textile mesh, rubber base
- We found no PFAS statement from the brand
- EVA degradation and microparticle shedding. Over extended use, EVA foam can fragment and shed microscopic…
2 hazards checked on this product, all on its full breakdown.
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- EVA foam, fabric lining
- We found no PFAS statement from the brand
- Microplastic shedding or foam degradation. Prolonged wear and friction can cause minor foam particle…
- foam cushioning, likely polyurethane or EVA
- We found no PFAS statement from the brand
- VOC off-gassing from polyurethane or EVA foam. New foam insoles routinely off-gas volatile organic compounds…
3 hazards checked on this product, all on its full breakdown.
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- Foam cushioning (EVA or polyurethane base)
- We found no PFAS statement from the brand
- Adhesive or binding agent toxicity. Insole construction requires adhesives to bond foam, backing, and any…
2 hazards checked on this product, all on its full breakdown.
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- Foam, fabric, possibly textile blend
- We found no PFAS statement from the brand
- Foam degradation and odor, EVA and polyurethane foam can break down under prolonged moisture, heat, or…
2 hazards checked on this product, all on its full breakdown.
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- foam cushioning with textile/synthetic upper
- We found no PFAS statement from the brand
- Azo dyes in textile upper. Synthetic textile uppers on insoles are often dyed with reactive or acid azo dyes…
4 hazards checked on this product, all on its full breakdown.
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- Foam/cushioning insole, likely EVA or polyurethane base
- We found no PFAS statement from the brand
- Foam degradation and microfragmentation, EVA and polyurethane insoles degrade mechanically over time with…
2 hazards checked on this product, all on its full breakdown.
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- Nylon with water-repellent coating
- We found no PFAS statement from the brand
- PFAS. Nylon anoraks commonly use traditional PFAS-based water-repellent coating finishes for durability. Keen…
2 hazards checked on this product, all on its full breakdown.
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- synthetic fabric with water-repellent finish
- We found no PFAS statement from the brand
- PFAS. Conventional water-repellent coating finishes on synthetic windbreakers typically rely on fluorinated…
2 hazards checked on this product, all on its full breakdown.
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- foam/gel insole with moisture-wicking treatment
- We found no PFAS statement from the brand
- PFAS. Outdoor insoles with moisture-wicking claims are almost universally treated with fluorinated compounds.…
3 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonKeen and PFAS, common questions
- Does Keen have PFAS?
- Keen averages 52 out of 100 on PFAS Authority's PFAS and toxin screen across the 10 Keen products graded as of October 2026, and none of them reach its 70 point pass mark. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is Keen non-toxic?
- No Keen product we graded reaches Good. The best of them is KEEN Men's K-10 Outdoor Replacement Insole at 65/100.
- Which Keen products should I avoid?
- The lowest-graded Keen products we have scored are KEEN Men's Outdoor K-20 Plus Insole, KEEN KUTTER Windbreaker Jacket (Hunter), Keen Kutter USA, KEEN KUTTER Anorak Jacket (Jet), Keen Kutter USA. Each one links to the evidence behind its grade.
Every grade uses the same public rubric. How grades work →