Klaus Märtens designed improved army boots with soft leather and air-padded soles while recovering from an injury in 1945. After the war, he made himself a pair with air-cushioned soles using leather from a cobbler's shop. Together with an English shoe family, Griggs, they developed the shoe further, adding trademark yellow stitching and branding the soles as "Air Wair", now often known as Doc Martens.