The American jacket also goes by the name of “the sack”.
The jacket, in fact, is made out of only two straight fabric panels. A technique that would be perfect for large scale production of clothes.
The jacket also comes with almost no padding and a straight silhouette. It is usually single breasted, with two or three buttons. The canvas features no darts. It also has a single vent in the back, low armholes and flap pockets. The sleeves wear with a loose fit and feature three buttons only.
The Pants :
The pants are a full cut, with no pleats which would save a significant amount of fabric in the large scale production.