i admit it, i had no idea what this was. It looks like it would be a kind of jean fabric, but apparently, it is used for suits and overcoats.
This fabric was created in the 19th century by a fellow named Thomas Burberry. The object of the fabric was to last long for workers and such.
Burberry took his idea and the name from a garment called gaberdine. Supposevly, the fabric was tied around the waist usually for homeless people and beggars, to keep them warmer.
Whatever it was, people still use it today, not for warmth, but for fashionalble suits, pants, and even purses.