Knickerbocker Director Cotton Shirt in Red ClayKnickerbocker Director Cotton Shirt in Red Clay. A short sleeve button down, polished and professional. 100% Cotton Button Down Matt is 5'11 and wears the Medium Made in Portugal Knickerbocker Knickerbocker, a New York brand founded by Andrew Livingston in 2013, began as a manufacturing company on the border of Brooklyn. Their philosophy centers around a deep appreciation for people and processes, which the brand has carried with it as it has expanded