A lab coat is a protective garment worn by professionals in scientific and medical settings. Typically made of cotton or a cotton-blend fabric, it is designed to shield the wearer from spills, stains, and hazardous materials. Lab coats often feature long sleeves, a front button closure, and pockets for carrying tools or instruments. In addition to scientists and medical personnel, lab coats are also worn by students in laboratories during experiments. They come in various lengths, including knee-length and full-length, and are usually white, symbolizing cleanliness and professionalism in fields like chemistry, biology, and medicine.