Apple pie, baseball, and Left Field's Work Uniform Chino. What's more all-American? The Work Uniform Chino is made from 13oz duck work wear fabric from the Mt. Vernon factory in Trion, Georgia. These chinos are durable all around, from the fabric, to the talon zipper and the military grade melamine buttons. Don't mistake these as your standard flat ducks. The midnight navy color will break in, fade, and develop character almost as good as raw denim.