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Merino wool base layers, socks and hats from a fifth-generation New Hampshire woollen textile family business.

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.

Irish linen weaver since 1912, operating from what it calls Ireland's oldest remaining linen mill, with its own dyeing and finishing works.

North Carolina sock brand from Nester Hosiery making merino wool hiking, everyday, snow, hunting and work socks with an all-US supply chain.