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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.

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.

WFTO-member Fair Trade knitwear maker in Lima producing alpaca, cotton and merino knits for designer brands under private label and its own MKM label.

Portuguese fully-fashioned knitwear factory producing for major brands and chains in cashmere, merino, silk and fine cottons including Pima and Sea Island.