Gowning refers to wearing special garments to control particulate contamination in cleanrooms. Correct gowning is important because particulate contamination is invisible. Operators must be trained in proper gowning procedures to prevent introducing contamination. Gowning involves several steps like showering, removing jewelry at home and at work, and putting on attire like coveralls, booties and gloves in the correct order when moving between areas of different cleanroom classes. Maintaining clean attire and routes is important for minimizing contamination risks.