Every layer has to qualify
A two-piece set is wool-free only if both pieces are. Injinji’s Liner + Hiker has a synthetic liner but a wool outer, so it is not on the list. Alpaca is an animal fiber too, so PAKA’s socks are left out.
Toe sleeves, a double layer or a standard sock
Injinji’s trail socks have toe sleeves; Wrightsock’s Adventure Crew has two layers built in; Darn Tough’s women’s Coolmax Hiker and Mirror Lake are standard shapes, and Feetures’ socks are shaped for the left and right foot. Each asks something different of the room in your shoes.
Thorlo pads its synthetic hiking socks in light, moderate and maximum cushion, the thickest with acrylic; Wigwam’s Cool-Lite, Phantom and Bravura socks are synthetic knits from no-show to crew; Fox River’s Ramble and Wick Dry Euro use Coolmax polyester, the Euro with a quarter cotton.
Feetures Trail Max: check the label on your pair
Feetures’ Trail Max Mini Crew has appeared with two different polyester and nylon blends. Both are synthetic, but the exact blend is unsettled, so it is left out of the list; check the label on the pair.
Coolmax Hiker 1931: part of the blend is unnamed
Darn Tough calls the men’s Coolmax Hiker 1931 vegan, but its US blend lists part of the sock only as other fiber. If you must avoid a particular fiber, ask Darn Tough before you buy it.
Wool-free and vegan are different claims
A full fiber list tells you whether wool or alpaca is in the sock. It does not tell you about dyes, glues or how the sock was made. For a vegan sock, look for the maker to say so for that exact product, as Darn Tough does for its Coolmax Hiker.
A pair is left off the wool-free list if a fiber is unnamed, a layer is missing or the published blends disagree. A material match cannot promise how your skin will react.
What this can’t tell you
Fiber lists come from the makers’ pages. If you react to a fiber, read the label on the pair you receive before wearing it.
