Fiber Directory

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Up to 4 listings side by side.

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.

TS Designs✕

Burlington, North Carolina B Corp t-shirt maker using only natural fibers (US-grown cotton, hemp, wool), offering eco printing and garment dyeing for brands.

Ibex✕

Merino wool outdoor clothing — base layers, socks and jackets — founded in Vermont in 1997, now based in Boulder.

Nester Hosiery✕

Mount Airy, North Carolina wool sock mill that knits merino socks for private-label clients such as REI and L.L.Bean, makes licensed lines, and owns Farm to Feet; some programs use synthetic yarns.

TypeManufacturerManufacturerBrandManufacturer
LocationBraga, PTBurlington, USBoulder, USMount Airy, US
FibersOrganic cotton · MerinoCotton · Hemp · WoolMerinoMerino · Wool
MakesSocksTops & teesBase layers, Socks, OuterwearSocks, Accessories
ServicesKnittingPrinting, Dyeing—Knitting, Private label
Entry price——$$$ · Base layer top $135—
Min. orderNot statedNot statedNot statedNot stated
CertifiedGOTS, OEKO-TEX Standard 100, Responsible Wool StandardB CorpNone listedResponsible Wool Standard
NaturalNot 100%. Some blends100% naturalNot 100%. Some blendsNot 100%. Some blends
Founded1985—19971993