Jungle Cloth is a water-repellant version of the Bedford Cord fabric known for its tight weave and faint corduroy-like ridges. Also known as whipcord, Jungle Cloth was used by the US Navy during the 1920s-1950s as the outer fabric on cold weather clothing.
Perhaps most famously, it was found on the N-1 Deck Jacket that was first designed in the 1940s as part of a three-piece suit along with trousers and helmet.
The N-1 went through several iterations and appeared in navy blue, khaki and olive colours. In post-war years, the volume of surplus Deck Jackets on the market led to a rise in civilian use. Use in iconic movies and wear from the likes of James Dean and Paul Newman ensured that the N-1 became a cult classic.