Buck Mason

Buck Mason's founders still run the company and bought a century-old Pennsylvania knitting mill to manufacture its tees entirely in the US, from American-grown cotton to finished shirt — an unusual level of vertical integration for the category. The rest of the line lacks that transparency — no factory list, no Code of Conduct, no living wage commitment for overseas production, and Good On You rates both People and Planet 2/5. One genuinely owned supply chain next to one invisible one.