Most flies now use a zip, though button flies continue in use.
The pants were made of a khaki wool-twill, pleated with seven belt loops, two scalloped button flap rear pockets, a button fly and a four-inch military style hem.
It may or may not have a concealed button fly front.
The trousers had a button fly and tied at the bottom of the legs.
Davis' idea was to use copper rivets to reinforce the points of stress, such as on the pocket corners and at the bottom of the button fly.
