Since the steam age, due to the particularity of railway work, its clothing is different from that of the public. In the 1870s, the American railway company developed railway uniforms, but engineers, boiler workers and other types of work need stronger and durable clothing to prevent oil pollution and soot cinders. By the 1890s, engineers and boiler workers have evolved their work clothes, which include a soft and durable hat, usually made of denim or tannic cloth.
- Hickory stripe: 10oz yarn-dyed weaving fabric
- Selvadge denim: 13oz denim
- Duck canvas: 12oz denim
- Fitted: 22.05 × 23.62(in) / 56 × 60(cm)