Is Keen PFAS-free?
Across 37 graded products, Keen averages F (39/100). On disclosure, the brand says nothing publicly about PFAS. None of its products grade C or better yet. Grades are model-based estimates, not lab results.
Graded and flagged D and F, we’d swap these
Keen
Kenetrek Men's Sonora Lightweight Hiker Socks
merino wool blend, nylon
Lower PFAS concern; Keen has not disclosed water-repellent coating treatments but standard hiking socks rarely require fluorinated water resistance.
⚠Risky category by default
Keen
Keen Socks
Cotton/synthetic fiber blend, no waterproof or stain-resistant coating disclosed
Lower concern, basic socks with no chemical treatments identified.
⚠Risky category by default
Keen
Kenetrek Canyon Lightweight Boot Height Socks
Merino wool blend (primary); elastic/synthetic blend cuff
Lower concern for typical wool socks, but synthetic elastic blends and undisclosed finishes introduce minor uncertainty.
⚠Risky category by default
Keen
Women's Victoria Crew Lite Socks1
Merino wool blend, nylon reinforcement
Lower concern, wool socks unlikely to contain PFAS, but Keen has not publicly disclosed their treatment practices.
⚠Risky category by default
Keen
Women's Hiking Light Crew Socks Size Medium 7-9.5 2 Pairs
Merino wool blend and synthetic fibers
Lower concern for PFAS, but Keen provides no public disclosure on water-repellent coating treatment chemistry.
⚠Risky category by default
Keen
Men's Basecamp 2.0 Lightweight Quarter Crew Hiking Sock
Merino wool blend
Lower PFAS concern; conventional hiking sock with no water-repellent treatment disclosed.
⚠Risky category by default
Keen
Canyon Lightweight Sock, Kenetrek
Merino wool blend, nylon
Lower concern; natural fiber base without known water treatments, but Kenetrek silent on PFAS transparency.
⚠Risky category by default
Keen
Kane Structure Crew Socks
Merino wool blend, synthetic fibers
Lower concern, basic crew socks with no water/stain treatments typical of the category, but Keen lacks public PFAS transparency.
⚠Risky category by default
Keen
Cargo Pants 40x34 Mens Double Knee Canvas Hiking Pockets Heavy
Heavy canvas cotton, double-knee reinforced, no water-resistant treatment mentioned
Lower concern, untreated heavy canvas avoids common PFAS durable-water-repellent coatings.
⚠Risky category by default
Keen
Men's K-10 Outdoor Replacement Insole
EVA foam, textile mesh, rubber base
Lower concern. Standard insole materials without known PFAS triggers.
⚠Risky category by default
Keen
Men's K-30 High Outdoor Insole
foam cushioning with textile/synthetic upper
Insoles lack PFAS transparency; Keen's limited disclosure creates moderate uncertainty.
⚠Risky category by default
Keen
Men's Utility K-20 Cushion Insole
foam cushioning, likely polyurethane or EVA
Lower concern; standard foam insole with no PFAS-typical features identified.
⚠Risky category by default
Keen
Men's Utility K-10 Replacement Insole
EVA foam, fabric lining
Lower concern; standard insole without water treatment.
⚠Risky category by default
Keen
Men's Utility K-30 Low Arch Insole
Foam cushioning (EVA or polyurethane base)
Lower concern; no reported PFAS triggers in basic insole design.
⚠Risky category by default
Keen
Utility K-30 Arch Insole
Foam, fabric, possibly textile blend
Lower concern; basic insole, no known PFAS-prone features.
⚠Risky category by default
Keen
Outdoor K-10 Replacement Insole
Foam/cushioning insole, likely EVA or polyurethane base
Lower concern. No known water-resistant treatment typical for insoles.
⚠Risky category by default
Keen
Men's Targhee IV Mid Waterproof Hiking Boots
Nubuck leather upper, waterproof membrane (unspecified), rubber outsole
Skip until Keen discloses waterproof treatment chemistry or certifies PFAS-free.
⚠Waterproof or stain-proof treatment
Keen
Men's Hightrail Mid Wide Waterproof Hiking Boots
Leather/synthetic upper; waterproof membrane (water-repellent coating-treated)
Waterproof hiking boots carry PFAS risk; Keen does not disclose treatment chemistry.
⚠Waterproof or stain-proof treatment
Keen
Men's Utility Flint II
Leather/synthetic upper with water-repellent coating-treated textile components
PFAS risk unclear, Keen uses water-repellent coating treatments on utility shoes but does not publicly disclose chemistry.
⚠Waterproof or stain-proof treatment
Keen
Women's Hightrail Mid Waterproof Hiking Boot
Waterproof leather/synthetic upper with water-repellent coating-treated textiles
Moderate PFAS risk due to waterproof treatment; Keen does not disclose water-repellent coating chemistry.
⚠Waterproof or stain-proof treatment
Keen
Men's Hightrail Waterproof Hiking
Textile upper with water-repellent coating (water-repellent coating) finish
Waterproof hiking boot; PFAS risk unknown, no brand disclosure on water-repellent coating chemistry.
⚠Waterproof or stain-proof treatment
Keen
Women's Targhee IV Mid Waterproof Hiking Boots
Textile upper with water-repellent coating (water-repellent coating) coating
Waterproof hiking boot with typical water-repellent coating treatment; PFAS composition unconfirmed by brand.
⚠Waterproof or stain-proof treatment
Keen
Men's Targhee EXP Waterproof Mid
leather/textile upper with waterproof treatment (likely water-repellent coating)
Skip or contact Keen directly, waterproof hiking boots typically use PFAS-based water-repellent coating, but the brand discloses nothing.
⚠Waterproof or stain-proof treatment
Keen
Men's Targhee III Mid Waterproof Hiking Boots
Leather/textile upper with waterproof membrane (unspecified water-repellent coating treatment)
Waterproof boots likely treated with legacy water-repellent coating, PFAS risk present but unconfirmed; seek product spec sheet or contact Keen directly.
⚠Waterproof or stain-proof treatment
Keen
Ken's Unisex Waterproof Breathable Socks
Merino wool blend with water-repellent coating (water-repellent coating) finish
Skip until Keen discloses water-repellent coating chemistry or commits to PFAS-free.
⚠Waterproof or stain-proof treatment
Keen
The Ranger
textile with water-repellent coating (water-repellent coating) coating
Skip or contact KEEN directly, waterproof apparel typically uses PFAS-based water-repellent coating; brand silence raises concern.
⚠Waterproof or stain-proof treatment
Keen
Gale Waterproof Rain Jacket
Polyester with water-repellent coating (water-repellent coating) finish, coating unspecified
Skip unless KEEN discloses their water-repellent coating chemistry, waterproof jackets are a common PFAS vector.
⚠Waterproof or stain-proof treatment
Keen
Gale Waterproof Rain Jacket - Black | Helly Hansen
polyester shell with water-repellent coating (water-repellent coating) treatment; lining unspecified
Skip until Helly Hansen clarifies its water-repellent coating chemistry, waterproof jackets routinely use PFAS-based treatments.
⚠Waterproof or stain-proof treatment
Keen
Women's Hiker Micro Crew Midweight with Cushion
merino wool blend, water-repellent coating-treated upper
Moderate PFAS risk due to water-repellent coating treatment; Keen does not disclose details.
⚠Waterproof or stain-proof treatment
Keen
Outdoor Pants Hiking Pants With Side Pocket Rn 131197 Grey Size
Nylon/polyester blend with water-repellent coating finish
Moderate PFAS concern due to likely water-repellent coating treatment; no brand disclosure or third-party verification.
⚠Waterproof or stain-proof treatment
Keen
Pants & Jumpsuits | Keen Utility Outdoor Cargo Hiking Pants Tan Khaki Women's Size 10r | Color: Tan/Yellow | Size: 10 | Ottustac's Closet
nylon/polyester blend with likely water-repellent coating (water-repellent coating) finish
Skip until Keen discloses water-repellent coating chemistry or verifies PFAS-free.
⚠Waterproof or stain-proof treatment
Keen
Women Flint Outdoor Hiking Pant Size 10
nylon/polyester blend with water-repellent coating finish
Likely lower concern, but Keen's water-repellent coating chemistry is undisclosed, caution with water-resistant outdoor apparel.
⚠Waterproof or stain-proof treatment
Keen
Pants & Jumpsuits | Keen Footwear Khaki Size 10 Regular Hiking Cargo Pants | Color: Green | Size: 10 | Branded_Butler's Closet
Cotton/synthetic blend with water-repellent coating finish
Skip until Keen discloses water-repellent coating chemistry or pursue verified PFAS-free outdoor wear.
⚠Waterproof or stain-proof treatment
Keen
Pants Mens 28x30 Beige Canvas Cargo Workwear Outdoor Hiking
canvas cotton with unspecified water-resistant finish
Skip or verify coating source before purchase, Keen does not disclose water-repellent coating chemistry.
⚠Waterproof or stain-proof treatment
Keen
Women's Koen Pant
Nylon/polyester blend with water-repellent coating finish
Outdoor pants likely treated with water-repellent coating, Keen hasn't disclosed PFAS status; consider contacting brand directly.
⚠Waterproof or stain-proof treatment
Keen
Men's Brown Nylon Hiking Pants Size 28x32
Nylon with water-repellent coating (water-repellent coating) treatment
Higher PFAS concern due to water-repellent coating treatment; Keen provides no disclosure on chemistry.
⚠Waterproof or stain-proof treatment
Keen
Men's Outdoor K-20 Plus Insole
foam/gel insole with moisture-wicking treatment
Insole likely waterproofed; Keen does not disclose PFAS status.
⚠Waterproof or stain-proof treatment
Every grade uses the same public rubric. How grades work →