Fiber Directory

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Darn Tough✕

Merino wool socks (blended with nylon for durability) made in Northfield, Vermont, with a lifetime guarantee.

Polopiqué✕

Vertically integrated Portuguese textile group that spins, weaves, knits, finishes and sews mainly cotton, organic cotton and linen fabrics and garments for global fashion brands.

Fiorima✕

Sock maker near Braga, Portugal, producing about 3.5 million pairs a year in organic cotton and merino for department stores, chains and brands such as Asket.

Duckworth✕

Montana brand making US-made merino wool shirts, base layers, sweatshirts, jackets and socks from wool grown on the Helle family ranch and Rocky Mountain growers.

TypeBrandManufacturerManufacturerBrand
LocationNorthfield, Vermont, USSanto Tirso, PTBraga, PTUnited States
FibersMerinoCotton · Organic cotton · LinenOrganic cotton · MerinoMerino
MakesSocksFabric & yarnSocksTops & tees, Shirts, Pants & skirts, Base layers, Outerwear, Socks, Accessories
Services—Spinning, Weaving, Knitting, Dyeing, Cut & sewKnitting—
Entry price$$ · Pair of socks $24.00——$$$ · Base layer top $125
Min. orderNot statedNot statedNot statedNot stated
CertifiedNone listedGOTS, OEKO-TEX Standard 100GOTS, OEKO-TEX Standard 100, Responsible Wool StandardNone listed
NaturalNot 100%. Some blendsNot 100%. Some blendsNot 100%. Some blendsNot 100%. Some blends
Founded2004—1985—