Ma.Strum is a British menswear and technical outerwear brand founded in 2008, originally launched as a collaborative project with the Massimo Osti Archive, which holds the experimental textile and garment archives of the late Italian designer Massimo Osti. Today based in Essex, England and led independently under CEO John Sharp, the label focuses on textile innovation and utilitarian design across jackets, performance shirts, trousers and casual pieces that draw influence from military, sportswear and performance clothing.