American Workwear is simply a style that is based upon necessity and usefulness rather than it just "looking good". When you're working on the factory line, or on the ranch, or in a steel mill you have to wear clothing that matches the environment, which protects, and makes it much easier to get the work done. Even the old school paperboy had to be mindful to not wear garments that would not get in the way of his job.
Comments: The style is most of the time referred to alternative man who set apart from the fast fashion trends change. The pure cotton used in almost every piece of garment is there to create a hard working attitude.
To get the look: Good boots and a great cotton trouser like a Jeans or a Worker. Finish it with a thick cotton Shirt or a leather vest. Colours like Ocreous, Brown, dark blue and red are the remembered colours for this amazing style.