Is Injinji PFAS-free?
Across 21 graded products, Injinji averages F (61/100). 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
Injinji
Run Lightweight No-Show
Merino wool blend with nylon
Lower PFAS concern for a performance sock; no waterproofing or stain treatment disclosed.
⚠Risky category by default
Injinji
Run Lightweight Crew
merino wool blend (primary); nylon/spandex blend
Lower PFAS concern, minimalist sock with no known water-resistant treatment; verify with brand if unsure.
⚠Risky category by default
Injinji
Trail Midweight Crew Socks
Merino wool blend with synthetic fibers; no water-repellent coating disclosed
Lower concern; no water-repellent coating treatment apparent, but lack of transparency limits certainty.
⚠Risky category by default
Injinji
Wool Liner Crew Socks
Merino wool liner, nylon blend
Lower concern choice, wool liner socks lack typical PFAS applications, but brand offers no transparency.
⚠Risky category by default
Injinji
Run Lightweight Mini-Crew
Merino wool blend (primary) with nylon reinforcement
Lower PFAS concern; merino-blend running socks lack typical water-repellent coating triggers, but brand silence limits full assurance.
⚠Risky category by default
Injinji
Run Midweight No-Show
Nylon/polyester blend athletic sock, no treatment claims
Lower concern; untreated synthetic athletic sock with no known PFAS application pathway.
⚠Risky category by default
Injinji
Men's Ultra Run Mini-Crew Socks
Nylon blend with merino wool (no water-repellent coating disclosed)
Lower concern, no waterproof finish disclosed, but lack of transparency keeps confidence moderate.
⚠Risky category by default
Injinji
Outdoor Midweight Crew
Merino wool blend (primary); nylon reinforcement
Lower concern; merino-nylon blend socks with no known water-repellent coating treatment or public PFAS disclosures.
⚠Risky category by default
Injinji
Snow Over The Calf Socks
Merino wool blend (primary); no known water-repellent treatment disclosed
Lower concern; natural fiber blend with no disclosed water-repellent coating, but brand transparency on treatments is absent.
⚠Risky category by default
Injinji
Liner Crew
Nylon and polyester blend (synthetic fiber)
Lower-concern choice; synthetic base fibers carry no known PFAS risk, but brand offers no transparency.
⚠Risky category by default
Injinji
Trail Midweight Over the Calf Running Socks
Merino wool blend, nylon, elastane (no special water-resistant or stain-resistant finish noted)
Lower PFAS concern; natural fiber blend with no disclosed durable water-resistant treatment.
⚠Risky category by default
Injinji
Spectrum Trail Midweight Gummy Bear Toesocks
Merino wool blend (primary fiber); elastane/nylon support
Lower-concern base materials, but no PFAS transparency from brand, typical for socks.
⚠Risky category by default
Injinji
Men's Liner + Hiker Crew
Merino wool blend, synthetic fibers (nylon/polyester base)
Lower-concern socks; no waterproofing or special coatings typical of PFAS risk.
⚠Risky category by default
Injinji
Trail Midweight Crew
merino wool blend, no water treatment specified
Lower concern; untreated merino wool socks unlikely to contain PFAS.
⚠Risky category by default
Injinji
Run Original Weight Mini Crew
merino wool blend with nylon
Lower PFAS concern; no water-repellent coating treatment typical for this style.
⚠Risky category by default
Injinji
Ultra Run Mini Crew
Merino wool blend, nylon, likely no water repellent treatment
Lower concern. Merino wool socks with no known water-repellent coating finish.
⚠Risky category by default
Injinji
Run Original Weight No Show
merino wool blend with nylon
Lower concern. Merino blend, no known PFAS treatments.
⚠Risky category by default
Injinji
Snow Crew Shadow Toesocks
nylon/polyamide blend with elastane
Lower concern. No water-repellent coating treatment typical for toe socks.
⚠Risky category by default
Injinji
Midweight Mini-Crew Unisex Football Socks
nylon/polyester blend, no reported surface treatment
Lower concern. No waterproof or stain treatments typical of PFAS socks.
⚠Risky category by default
Injinji
Ultra Run Crew
Merino wool blend with moisture-wicking treatment
Lower-concern athletic sock; merino wool reduces PFAS urgency, but water-repellent coating treatment warrant confirmation.
⚠Waterproof or stain-proof treatment
Injinji
Snow Crew
Merino wool blend with water-repellent coating (water-repellent coating) treatment
Skip until Injinji discloses water-repellent coating chemistry or switches to PFAS-free treatment.
⚠Waterproof or stain-proof treatment
Every grade uses the same public rubric. How grades work →