Coveralls are loosely fitted protective clothing worn by workers in hazardous working environments. They are worn over regular clothes to protect wearers from heat, cold, splashes, sparks, flames, and flying debris in the workplace. Coveralls are available as a one-piece garment with full sleeves and long legs as well as in a bib-and-brace design with a front patch and straps. Coveralls are categorized into durable and disposable coveralls. Durable coveralls are generally made of denim, tough cotton, or linen, whereas, the most important raw material of disposable coveralls is polyethylene.