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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.

Fair trade nonprofit in Lalitpur, Nepal whose 2,300+ home-based women hand-knit sweaters, hats, socks, gloves and scarves in wool, cotton, nettle and silk to buyers' and own designs.

Japan's first hemp apparel brand, making casual tops, bottoms and outerwear in hemp and hemp-cotton blends under the 'Art of Hemp' theme.

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.