Heritage9.1 is an Italian sock brand made by MAR-SIL SRL in Cernusco sul Naviglio, near Milan. The brand traces its start to a friend admiring a vintage 1980s sock at the founder's family shop, which led to a line built on traditional Italian hosiery techniques and yarns from the Filmar spinning mills. Its collections include striped crew and knee-high socks in cotton, wool, and alpaca, with men's and women's sizing sold separately, priced roughly €16 to €25.