Fiber Directory

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Darn Tough✕

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

IAFIL✕

Spinner of natural-fiber yarns in cotton, silk, linen, cashmere and alpaca for knitting and weaving.

Blue Canoe✕

Long-running organic cotton clothing line making bras, underwear, tops, dresses and loungewear in the USA.

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.

TypeBrandMillBrandBrand
LocationNorthfield, Vermont, USMilan, ITSan Francisco, USUnited States
FibersMerinoCotton · Silk · Linen · Cashmere · AlpacaOrganic cottonMerino
MakesSocksFabric & yarnUnderwear, Tops & tees, Pants & skirts, Dresses, SleepwearTops & tees, Shirts, Pants & skirts, Base layers, Outerwear, Socks, Accessories
Services—Spinning——
Entry price$$ · Pair of socks $24.00—$$$ · Pair of underwear $40.00$$$ · Base layer top $125
Min. orderNot statedNot statedNot statedNot stated
CertifiedNone listedMasters of LinenNone listedNone listed
NaturalNot 100%. Some blendsNot 100%. Some blendsNot 100%. Some blendsNot 100%. Some blends
Founded2004—1994—