Fiber Directory

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Darn Tough✕

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

Botto Giuseppe✕

Biella maker of yarns, fabrics and jerseys for apparel in wool, cashmere and linen.

IAFIL✕

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

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.

TypeBrandMillMillBrand
LocationNorthfield, Vermont, USValdilana, ITMilan, ITUnited States
FibersMerinoWool · Cashmere · LinenCotton · Silk · Linen · Cashmere · AlpacaMerino
MakesSocksFabric & yarnFabric & yarnTops & tees, Shirts, Pants & skirts, Base layers, Outerwear, Socks, Accessories
Services—Spinning, Weaving, KnittingSpinning—
Min. orderNot statedNot statedNot statedNot stated
CertifiedNone listedMasters of LinenMasters of LinenNone listed
NaturalNot 100%. Some blendsNot 100%. Some blendsNot 100%. Some blendsNot 100%. Some blends
Founded2004———