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Norwegian wool brand making merino wool base layers, thermal underwear, fleece-wool layers and beanies, using New Zealand merino knitted in its own Estonian facility.

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.

Arequipa knitwear and apparel maker producing alpaca and organic cotton sweaters, coats and accessories for brands and designers; also runs its own label, Anntarah.

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