Our Denim Work Shirt can double as a thick, heavy shirt or an overshirt. It is made with premium 11-oz. denim, a classic workwear fabric for ranchers and vintage miners. This fabric has durability for hard work and decades of reliable service. The collar is lined with contrasting cotton corduroy for distinctive flair and next-to-skin comfort. Custom buttons secure the front closure, cuffs, and chest-pocket flaps.