Is Smartwool PFAS-free?
Across 26 graded products, Smartwool averages F (58/100). 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
Smartwool
4-Pack Everyday Athletic Crew Socks
merino wool blend (primary fiber)
Lower PFAS concern for basic merino socks, but Smartwool does not publicly disclose water-repellent coating chemistry.
⚠Risky category by default
Smartwool
Men's Hike Medium Crew Socks
Merino wool blend (primary), elastic, synthetic dyes
Lower PFAS concern for basic wool socks, but no transparency from Smartwool.
⚠Risky category by default
Smartwool
Men's Mountaineer Classic Edition Maximum Cushion Crew Socks
Merino wool blend (primary natural fiber)
Lower PFAS concern, natural wool fiber with no waterproofing treatment flagged, but Smartwool provides no explicit PFAS disclosure.
⚠Risky category by default
Smartwool
Men's Hike Full Cushion Crew Socks
Merino wool blend (merino wool, nylon, elastane)
Lower PFAS concern; natural fiber socks unlikely to need water-repellent coating treatment, but Smartwool's lack of disclosure leaves room for uncertainty.
⚠Risky category by default
Smartwool
Men's Hike Classic Edition Full Cushion Crew Socks
Merino wool blend (primary fiber); no reported water-repellent coating (water-repellent coating) or stain treatment disclosed
Lower PFAS concern, plain wool socks with no disclosed treatments, but verify fiber content if sourcing matters to you.
⚠Risky category by default
Smartwool
Women's Run Zero Cushion Low Ankle Socks
Merino wool blend (primarily wool fibers)
Lower concern; wool socks carry minimal PFAS risk, but Smartwool's treatment details remain undisclosed.
⚠Risky category by default
Smartwool
Bike Low Ankle Zero Cushion Socks Men's
Merino wool blend (likely polyester/nylon blend for durability)
Lower concern; merino-based socks are unlikely PFAS sources, but no brand transparency on finishes.
⚠Risky category by default
Smartwool
Everyday Athletic Low Ankle Socks
Merino wool blend (primary); elastic/nylon components
Lower concern, natural fiber socks with no known PFAS risk, but Smartwool lacks public PFAS transparency.
⚠Risky category by default
Smartwool
Men's Hike Light Cushion Ankle Socks
merino wool blend with nylon/elastane
Lower-concern base fiber; no water-resistant coating typical of hiking socks reduces PFAS risk.
⚠Risky category by default
Smartwool
Men's Run Zero Cushion Ankle Socks
Merino wool blend (primarily wool with synthetic reinforcement)
Lower-concern choice; wool-based construction avoids obvious PFAS triggers, but Smartwool has not disclosed treatment details.
⚠Risky category by default
Smartwool
Men's Spring Gloves
Merino wool blend, no water-repellent treatment specified
Lower-concern choice; merino-dominant gloves unlikely to need PFAS water treatment, but no explicit brand commitment.
⚠Risky category by default
Smartwool
Thermal Merino Glove
Merino wool, no reported coating
Lower PFAS concern; wool glove with no known water treatment or coating.
⚠Risky category by default
Smartwool
Cozy Glove Smartwool
Merino wool blend
Lower concern; natural wool gloves with no known PFAS-risk treatments, but brand offers no transparency.
⚠Risky category by default
Smartwool
Liner Gloves
Merino wool blend, no known Teflon-family coating
Lower-concern basic wool glove liner; no known PFAS triggers, but brand hasn't explicitly addressed the topic.
⚠Risky category by default
Smartwool
Men's Boiled Wool Gloves
boiled wool (merino wool, lanolin treated)
Lower concern for PFAS; boiled wool is inherently water-resistant without fluorinated water-repellent coating finishes, but no explicit brand disclosure.
⚠Risky category by default
Smartwool
Active Fleece Gloves
Merino wool blend, knit construction
Lower-concern option; merino wool rarely requires PFAS treatments, but brand silence on sourcing is a gap.
⚠Risky category by default
Smartwool
Men's Merino Gloves
Merino wool
Lower PFAS concern, merino wool gloves without water-repellent treatment pose minimal risk.
⚠Risky category by default
Smartwool
Men's Run Targeted Cushion Mid Crew Socks
Merino wool blend with synthetic nylon reinforcement
Lower concern. Natural fiber socks unlikely to contain PFAS.
⚠Risky category by default
Smartwool
Run Pattern Crew Socks 3-Pack
Merino wool blend, no water repellent finish
Lower concern. Merino wool socks with no waterproof coating.
⚠Risky category by default
Smartwool
Women's Run Targeted Cushion Low Ankle Socks
Merino wool blend, no specified water-repellent coating treatment
Lower concern. Merino wool socks without disclosed water repellent treatment.
⚠Risky category by default
Smartwool
Unisex Run Zero Cushion Crew Socks
Merino wool blend, no stated water-repellent treatment
Lower concern. Merino wool socks lack typical water-repellent coating coatings.
⚠Risky category by default
Smartwool
Men's Run Zero Cushion No Show Socks
Merino wool blend, no reported water-resistant treatment
Lower concern. Merino wool socks unlikely to contain intentional PFAS.
⚠Risky category by default
Smartwool
Men's Ridgeway Gloves
Merino wool with water-repellent coating finish
Lower concern, but water-repellent coating finish source unclear, contact Smartwool for specifics.
⚠Waterproof or stain-proof treatment
Smartwool
Active Fleece Wind Mittens
Merino wool blend with water-repellent coating finish
Lower concern but opacity on water-repellent coating chemistry is a caution flag.
⚠Waterproof or stain-proof treatment
Smartwool
Ridgeway Lined Mitten
Merino wool with fleece lining; water-repellent coating treatment unspecified
Lower-concern baseline, but water-repellent coating chemistry not disclosed, request clarification if PFAS-avoidance matters to you.
⚠Waterproof or stain-proof treatment
Smartwool
Men's Run Cold Weather Targeted Cushion Crew Socks
Merino wool with water-repellent coating finish
Merino wool is PFAS-risk material; water-repellent coating finish raises concern.
⚠Waterproof or stain-proof treatment
Every grade uses the same public rubric. How grades work →