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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.

Izmir maker of GOTS organic cotton apparel for brands, vertically integrated from contracted organic and regenerative cotton farms to yarn, fabric and private-label garments; also hemp.

Vertically integrated Lima maker of Pima, Tangüis and organic cotton knit fabrics and finished garments for global premium brands, also offering cotton blends with polyester and modal.

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.