The Twill Big Apple Cap in Knickerbocker Green. Made of a lightweight cotton twill fabric. Signature K.N.Y. Big Apple embroidery on the front with Knickerbocker embroidery on back. Adjustable back strap with Knickerbocker branded tin slider. Un-structured and low profile silhouette. Features our custom brim insert, which provides structure and greater flexibility to better fit the contour of the wearer.