Campaign Hat, Model of 1913. 100% Wool Montana peak WWI campaign hat comes with both the standard shoestring chinstrap and the later model leather chinstrap. The leather chinstrap was also a private purchase item used before the "official" version was issued. Leather sweatband with oilcloth welting and grosgrain ribbon with bow. 5 rows of stitching on the brim, four grommet vents as well as two grommets under the ribbon for the shoestring chinstrap and slits for the leather chinstrap if you decide to go that route. Hats are made when ordered Allow at least 3 weeks for shipping.