Compare

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

Munich cashmere label making women's and men's cashmere and wool knitwear and accessories, with a repair service for its garments.

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.

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.