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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.

Family-owned Danish label making maritime-inspired unisex sailor sweaters and knitwear in pure new wool and organic cotton.

Mount Airy, North Carolina wool sock mill that knits merino socks for private-label clients such as REI and L.L.Bean, makes licensed lines, and owns Farm to Feet; some programs use synthetic yarns.

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.