Fiber Directory

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Darn Tough✕

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

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.

TypeBrandManufacturerManufacturerBrand
LocationNorthfield, Vermont, USBraga, PTBurlington, USBoulder, US
FibersMerinoOrganic cotton · MerinoCotton · Hemp · WoolMerino
MakesSocksSocksTops & teesBase layers, Socks, Outerwear
Services—KnittingPrinting, Dyeing—
Entry price$$ · Pair of socks $24.00——$$$ · Base layer top $135
Min. orderNot statedNot statedNot statedNot stated
CertifiedNone listedGOTS, OEKO-TEX Standard 100, Responsible Wool StandardB CorpNone listed
NaturalNot 100%. Some blendsNot 100%. Some blends100% naturalNot 100%. Some blends
Founded20041985—1997