Cotton duck

Cotton duck is used in a wide range of applications, from sneakers to painting canvases to tents to sandbags.

[1] Historically, white untwilled cotton or linen fabric uniforms of this name were worn by British and French soldiers serving in the tropics.

A numbered duck classification system was put into effect by the Cotton Duck Association and the United States Department of Commerce[4] when discrepancies came about with various specifications and qualities of material.

In a technical paper titled "Development of the Standard Numbered Cotton Duck Specification", the Department's National Bureau of Standards established a set of specifications acceptable to manufacturer and consumer.

8 numbered duck with dimensions of 36 by 22 inches weighs 11 ounces (310 g) (19 − 8 = 11).