 One 1920s advertisement called it a "guaranteed unshrinkable fine wool flannel" for women who wanted both "daintiness" and "protectiveness".By the early 20th century it came in various weights and widths, some rather narrow by today's standards, and in both plain colours and woven or printed patterns, and was exported from the United Kingdom to other English-speaking countries.Towards the end of the 20th century it was woven in 150cm wide lengths suitable for modern garment design and production.