Gannex is a waterproof fabric composed of an outer layer of nylon and an inner layer of wool with air between them. It was invented in 1951 by Joseph Kagan, a UK industrialist and the founder of Kagan Textiles Ltd., of Elland, which made raincoats. The company is now defunct. The mill occupied by the company was demolished in 2010.[1] The raincoats were worn by a number of well known people.[2]