What is "presstoff"

Presstoff (also Preßstoff or Pressstoff) is the German-language term for a type of ersatz or replacement leather used during the first half of the 20th century. Made of specially layered and treated paper pulp, Presstoff was durable and easily adapted to be used in place of leather, which under wartime conditions was rationed. First invented in the 19th century, it gained its widest use in Germany during the Second World War.